What Are the Cameras on Top of a Street Light at a Intersection?

Its a trafic camera...it serves many purposes like trafic updates on the news but the main purpose is for those who run red lights it takes a still frame of you at the wheel an another of ur license plate which is put in the police stations computers they right the ticket and send via postal mail with copies of the pics an paper work along with the ticket

What Are the Cameras on Top of a Street Light at a Intersection? 1

1. I was crossing the street and the light turned green was it my fault?

No, if you were already walking across the road on the cross walk and the light went green then the vehicles must yield until your safely across

2. Do you have a timed street light that is always red when you come to it?

yup, all the time!

What Are the Cameras on Top of a Street Light at a Intersection? 2

3. Which kind of street light gives off more light?

The most efficient light, in terms of lumens per watt, is low-pressure sodium. Because these give light almost exclusively from the sodium D-lines (589 nm), they do not do well at showing colors and are used mostly in areas where light pollution of nearby astronomical observatories is to be minimzed (as near the Carlsbad observatory on the southern California coast). Next best are high-pressure sodium lamps, which give a yellowish light that has enough spectral components other than sodium-D to gove much better color renditiion. Next best is mercury vapor, but these give only about half as much light as high-pressure sodium, so they are being phased out of streetlight service. Trailing far behind are incandescent lamps, which used to be common but are now rare

4. How much does it cost to intall a street light, pole and all?

Street Light Pole Cost

5. Who invented the street light?

Before electricity was discovered, gas was used, no body knows who invented it but it was invented in the Arab Empire, specially in Crdoba, Spain. The first electric street lighting employed arc lamps,It was developed by the Russian Pavel Yablochkov in 1875. Hope this helps !

6. Is it legal to make a left turn from a one way street to another one way street, if the light is red?

In Wisconsin you can never legally turn left at a red light without a arrow

7. When my street light comes on at dusk, it makes a loud humming noise. What's wrong with it?

Some types of bulbs will hum. It is caused by the electricity going through the gas inside the bulb. The electricity excites the gas molecules and makes them glow from the friction of moving around. The hum is from the molecules moving around. Do not worry about the noise unless it is coming from the fixture instead of the bulb. If it is coming from the fixture, then you have a wiring problem that should be fixed immediately.

8. LED Street Light Research Project Part II: New Findings | Semantic Scholar

Many cities are converting their existing street lighting to Light Emitting Diode (LED) source luminaires due to anticipated energy savings of 40 to 80 percent, as compared to high intensity discharge (HID) source luminaires, and maintenance savings estimated to be 50 to 75 percent due to the longer life of LED luminaires. Addressable electronic lighting controls and sensors are now available that can transform a basic streetlight into an intelligent, smart city device with public safety and... Expand

9. China Double Arm Street Light Pole Manufacturers, Suppliers, Factory - Double Arm Street Light Pole at Low Price - ZENITH

Since the establishment of our company, we have taken the promotion of national industries as our own responsibility and our goal is to become a leading provider of COB LED Street Light LED Street Light Bulbs in China. We are well-known as one of the leading Double Arm Street Light Pole manufacturers and suppliers in China for our quality products and low price. Please feel free to buy cheap Double Arm Street Light Pole made in China here from our factory.

10. Night photography with yellow street light?

Let's say you are not looking for glowing skyscraper skylines, but you want to record actual structures. Set up your tripod and camera at dusk, take a reading for aperture. At this point you can do any number of things. Halve your suggested dusk exposure and take a shot at dusk to lay in some sky color, then after dark make multiple exposures to fill in structure detail. If you can not do multiple exposures on the same shot, just set the shutter to "open" or "bulb" and have an assistant hold a lens cap over the lens when not making exposures (actual lens cap or anything to hold near the lens like a opaque cup or dark cloth, being careful not to bump the camera). Structural detail can be time exposures of existing light, but will be more interesting and better exposed if you carry a strobe flash around the building and trigger it at strategic points, such as corners of the building, or from low in the hedges at the base of the structure, anywhere you want to emphasize the architectural details. If you wear black clothes you and the light source will be invisible in the photo unless your body is directly between the line of sight of the lens and the subject. Night exposure settings are going to be a crap shoot. It is always going to be a guess. The dusk meter reading and the strobe are going to give good results, but most anything you capture will show an image. Just take notes and be prepared to repeat and tweak. Second or third time will let you get it through earned skill. The first time will let you get it with dumb luck. Either way you get your shot. If you want to nail the exposure, to the point of making tests, then set your aperture to it's prime setting, usually a stop or two away from the largest aperature. Then paint with your strobe and see the results. Repeat as necessary adjusting strobe strength until you nail it. If depth of field is crucial, pick the desired f stop during daylight and run your strobe tests with that f stop. Cheers

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Overall design of grid connected photovoltaic power generation system
Overall design of grid connected photovoltaic power generation system
Le système de production d'énergie photovoltaïque connecté au réseau convertit la sortie CC du réseau de cellules solaires en courant alternatif avec la même amplitude, la même fréquence et la même phase que la tension du réseau, et réalise la connexion avec le réseau pour transmettre l'énergie électrique au réseau. Le bloc-batterie peut améliorer la fiabilité de l'alimentation du système. Production d'énergie photovoltaïque sous un fort ensoleillement Le système répond d'abord à la consommation d'énergie de la charge CA, puis envoie la puissance excédentaire au réseau électrique; Lorsque la lumière du soleil est insuffisante et que le réseau de cellules solaires ne peut pas fournir suffisamment d'énergie pour la charge, il peut être obtenu à partir du réseau électrique ou de la batterie pour alimenter la charge. Bien sûr, si le coût est pris en compte, la batterie ne peut pas être connectée. Lorsque la lumière est insuffisante, il peut directement demander au réseau électrique une alimentation électrique pour la charge. Par rapport au système indépendant, le système de production d'énergie CA connecté au réseau élimine les équipements de stockage d'énergie.    Il existe également un système de production d'énergie hybride étendu connecté au réseau. Le type hybride est entre le type connecté à la grille et le type indépendant. Ce système est généralement intégré avec le contrôleur et l'onduleur. La puce d'ordinateur peut être utilisée pour contrôler l'ensemble du système afin d'obtenir le meilleur état de fonctionnement. La figure 32 montre le système de production d'énergie photovoltaïque hybride. La différence entre celui-ci et les deux systèmes ci-dessus est qu'il existe un groupe électrogène de secours supplémentaire. Lorsque la production d'énergie du réseau photovoltaïque est insuffisante ou que la batterie de stockage est insuffisante, le groupe électrogène de secours peut être démarré. Il peut non seulement alimenter directement la charge CA, mais aussi charger la batterie à travers le redresseur. Le système de production d'énergie photovoltaïque hybride est principalement utilisé pour la combinaison de champs électriques éloignés du réseau électrique et pour assurer la continuité de l'alimentation électrique, tels que les hôpitaux de campagne, les stations d'investigation scientifique, etc. Une fois qu'il y a une lumière insuffisante ou un temps pluvieux, la cellule solaire ne peut pas fonctionner et la puissance stockée par la batterie ne peut pas répondre aux besoins, le groupe électrogène remplacera la cellule solaire pour alimenter le système. Différents niveaux de tensions connectées au réseau photovoltaïque sont différents. Par exemple, les centrales photovoltaïques connectées au réseau au-dessus du niveau MWP doivent généralement être connectées au réseau électrique public au-dessus de 10kV, et les autres conceptions sont à peu près les mêmes. Le module photovoltaïque convertit l'énergie solaire en énergie électrique DC sous l'effet photovoltaïque, peut être utilisé pour Lampadaires solaires Ensuite, il pénètre dans l'onduleur connecté au réseau via l'armoire de distribution de protection contre la foudre, qui l'inverse en CA répondant aux exigences de qualité électrique du réseau électrique, et est connecté au système d'alimentation triphasé de la centrale CA 380V / 150Hz pour le réseau connecté génération de puissance. Pendant la journée, la production d'énergie photovoltaïque alimentera la charge électrique de la station et alimentera le surplus d'énergie au réseau électrique; Lorsque la production d'électricité est insuffisante le soir ou les jours de pluie, le réseau électrique public alimentera la charge électrique de la centrale. Le système de production d'électricité connecté au réseau photovoltaïque est équipé d'un ensemble de dispositifs de surveillance locaux avec interface de communication Ethernet, et l'état de fonctionnement et les données de fonctionnement du système sont fournis au système d'automatisation intégré de la station sans surveillance via l'interface pour réaliser une station de contrôle centralisée à distance surveillance.
Systèmes d'éclairage de rue photovoltaïque solaire
Le système d'éclairage de rue solaire photovoltaïque est un système d'éclairage photovoltaïque pour Lampadaires solaires Qui fonctionnent sur des cellules photovoltaïques ou des batteries, ce système d'éclairage public solaire convertira la lumière du soleil ou l'énergie solaire en électricité.    Types de systèmes solaires PV   Nous savons tous que les systèmes PV sont largement utilisés pour les applications solaires au cours des dernières années, et de nos jours, la portée des systèmes solaires photovoltaïques (PV) a augmenté de façon exponentielle.  Il existe trois principaux types d'énergie solaire et de systèmes photovoltaïques: réseau lié (système sur réseau), système hybride et système hors réseau.   Le Système solaire PV à réseau Est l'un des systèmes solaires connectés au réseau électrique en permanence. Comme dans le cas des systèmes solaires hors réseau, le réseau ne nécessite pas de piles. Les systèmes solaires photovoltaïques à réseau permettent d'utiliser l'énergie solaire lorsqu'elle est disponible ou de transmettre l'excès d'énergie dans le réseau.   Le Système solaire PV hybride   Est également connu sous le nom de système solaire PV lié au réseau avec batterie de secours. Le système solaire photovoltaïque hybride est un système solaire très utile si vous vivez dans un quartier où le réseau électrique n'est pas fiable, une zone qui prend beaucoup de temps à réparer le réseau ou les événements météorologiques extrêmes sont courants.  De plus, il fournit un hybride des avantages de l'énergie solaire de réseau, par exemple, en utilisant l'énergie solaire propre et renouvelable comme principale source d'électricité et en vendant de l'énergie excédentaire au service public grâce à la mesure nette.   Un Système solaire PV hors réseau   Fait référence à une installation qui ne se connecte pas au réseau électrique. Cela signifie que toute l'énergie produite est stockée et utilisée sur place. Généralement, les systèmes solaires photovoltaïques hors réseau fonctionnent à partir de l'énergie stockée dans un banc de batteries.   Comment fonctionne le système d'éclairage de rue solaire PV?   Vous remarquerez peut-être un panneau sombre au-dessus de la lumière lorsque vous voyez un lampadaire solaire sur la route. C'est le panneau solaire des cellules photovoltaïques qui convertiront la lumière du soleil en électricité. Et l'électricité sera stockée dans les batteries de lumière solaire. Ensuite, l'énergie solaire peut être utilisée au fur et à mesure des besoins. Les batteries d'éclairage solaire se chargeront en continu pendant que le panneau solaire est exposé à la lumière du soleil disponible. Réverbère solaire à batterie intégrée, car les batteries sont intégrées au Systèmes d'éclairage solaire , Ainsi les lampadaires solaires sont capables d'en tirer la lumière. Les systèmes d'éclairage public solaire sont toujours sans fil, il n'est pas nécessaire d'être attaché aux fils, pour la transmission de puissance.   Types de panneaux solaires PV   PV panneaux solaires jouent le rôle important dans les produits solaires, ils capturent le soleil ’S énergie et la convertir en électricité afin que les produits solaires puissent fonctionner. Il existe trois principaux types de panneaux solaires PV sont les panneaux solaires monocristallins, polycristallins et à couche mince. Chacun de ces panneaux solaires PV est fabriqué de manière unique et a une apparence esthétique différente.   Panneaux solaires monocristallins Lorsque les gens mentionnent les panneaux solaires monocristallins, ils sont généralement connus comme utilisés pour les produits solaires de première qualité. Les principaux avantages des panneaux monocristallins sont des rendements plus élevés et une esthétique plus élégante que les autres panneaux solaires. Les panneaux solaires monocristallins sont fabriqués à partir d'environ 40 cellules solaires monocristallines. Ces cellules solaires sont fabriquées à partir de silicium pur. Le silicium est formé en barres et coupé en plaquettes, afin de fabriquer des panneaux solaires avec des cellules solaires monocristallines. Ces panneaux solaires sont appelés «monocristallins» pour indiquer que le silicium utilisé est du silicium monocristallin. Comme une cellule monocristalline est composée d'un monocristal, les électrons qui génèrent un flux d'électricité ont plus d'espace pour se déplacer. Par conséquent, les panneaux solaires monocristallins sont plus efficaces.   Panneaux solaires polycristallins De même que les panneaux solaires monocristallins, les panneaux solaires polycristallins sont également fabriqués à partir de silicium. Cependant, les cellules polycristallines sont constituées de fragments du cristal de silicium fondu ensemble.  Les cellules solaires polycristallines sont appelées «multi-cristallines» ou silicium à plusieurs cristaux. Il y a moins de liberté pour les électrons de se déplacer car les cellules solaires polycristallines sont de nombreux cristaux dans chaque cellule. En conséquence, les cellules solaires polycristallines ont des cotes d'efficacité plus faibles, mais leur avantage est un prix inférieur. De nos jours, les panneaux solaires polycristallins augmentent rapidement en popularité et en efficacité, même s'ils constituent un développement plus récent.   Panneaux solaires à couche mince Les panneaux solaires à couche mince ne sont ’Toujours fabriqués à partir de silicium, ils peuvent être fabriqués à partir de divers matériaux, tels que le tellurure de cadmium, le silicium amorphe et le séléniure de cuivre indium gallium, c'est la caractéristique la plus distinctive des panneaux à couche mince. Les panneaux solaires à couche mince sont le développement le plus récent de l'industrie des panneaux solaires.   Avantages des systèmes d'éclairage de rue solaires photovoltaïques 1.   Le système d'éclairage solaire PV fournit des sources d'énergie propres et vertes. Il n'est pas nécessaire de s'inquiéter des panneaux générant une substance nocive dans l'air. 2.   Il n'est pas nécessaire de payer pour les matières premières, car le système solaire photovoltaïque dépend de l'énergie solaire pour produire de l'électricité.  L'énergie solaire est naturelle, gratuite et disponible en abondance pendant une longue période. Les gens peuvent économiser sur les coûts d'électricité une fois qu'ils commencent à utiliser l'énergie générée par les cellules PV. 3.   Les systèmes solaires photovoltaïques peuvent générer de l'électricité n'importe où. Tout ce dont il a besoin est la lumière du soleil, ce qui en fait une source d'énergie utile dans l'environnement extérieur. 4.   Le système solaire photovoltaïque a un rôle important dans les réseaux d'énergie intelligente, qui fonctionnent sur la production d'électricité distribuée.  Il est très respectueux de l'environnement car il permet de réduire la production d'électricité dans les centrales centralisées. 5.   Les systèmes solaires photovoltaïques réduisent les coûts, ils sont également un système d'énergie renouvelable promu grâce au financement de subventions gouvernementales. 6.   Par rapport à d'autres systèmes d'énergie renouvelable, les systèmes solaires photovoltaïques sont connus pour leurs faibles coûts de maintenance et d'exploitation. 7.   Parce que les systèmes solaires PV sont silencieux et gagnés ’T produire n'importe quel bruit, ils sont parfaits pour les zones urbaines et les applications résidentielles. 8.   Les systèmes solaires PV sont faciles à installer.
Systèmes d'éclairage de rue photovoltaïque solaire
Le système d'éclairage de rue solaire photovoltaïque est un système d'éclairage photovoltaïque pour Lampadaires solaires Qui fonctionnent sur des cellules photovoltaïques ou des batteries, ce système d'éclairage public solaire convertira la lumière du soleil ou l'énergie solaire en électricité.    Types de systèmes solaires PV   Nous savons tous que les systèmes PV sont largement utilisés pour les applications solaires au cours des dernières années, et de nos jours, la portée des systèmes solaires photovoltaïques (PV) a augmenté de façon exponentielle.  Il existe trois principaux types d'énergie solaire et de systèmes photovoltaïques: réseau lié (système sur réseau), système hybride et système hors réseau.   Le Système solaire PV à réseau Est l'un des systèmes solaires connectés au réseau électrique en permanence. Comme dans le cas des systèmes solaires hors réseau, le réseau ne nécessite pas de piles. Les systèmes solaires photovoltaïques à réseau permettent d'utiliser l'énergie solaire lorsqu'elle est disponible ou de transmettre l'excès d'énergie dans le réseau.   Le Système solaire PV hybride   Est également connu sous le nom de système solaire PV lié au réseau avec batterie de secours. Le système solaire photovoltaïque hybride est un système solaire très utile si vous vivez dans un quartier où le réseau électrique n'est pas fiable, une zone qui prend beaucoup de temps à réparer le réseau ou les événements météorologiques extrêmes sont courants.  De plus, il fournit un hybride des avantages de l'énergie solaire de réseau, par exemple, en utilisant l'énergie solaire propre et renouvelable comme principale source d'électricité et en vendant de l'énergie excédentaire au service public grâce à la mesure nette.   Un Système solaire PV hors réseau   Fait référence à une installation qui ne se connecte pas au réseau électrique. Cela signifie que toute l'énergie produite est stockée et utilisée sur place. Généralement, les systèmes solaires photovoltaïques hors réseau fonctionnent à partir de l'énergie stockée dans un banc de batteries.   Comment fonctionne le système d'éclairage de rue solaire PV?   Vous remarquerez peut-être un panneau sombre au-dessus de la lumière lorsque vous voyez un lampadaire solaire sur la route. C'est le panneau solaire des cellules photovoltaïques qui convertiront la lumière du soleil en électricité. Et l'électricité sera stockée dans les batteries de lumière solaire. Ensuite, l'énergie solaire peut être utilisée au fur et à mesure des besoins. Les batteries d'éclairage solaire se chargeront en continu pendant que le panneau solaire est exposé à la lumière du soleil disponible. Réverbère solaire à batterie intégrée, car les batteries sont intégrées au Systèmes d'éclairage solaire , Ainsi les lampadaires solaires sont capables d'en tirer la lumière. Les systèmes d'éclairage public solaire sont toujours sans fil, il n'est pas nécessaire d'être attaché aux fils, pour la transmission de puissance.   Types de panneaux solaires PV   PV panneaux solaires jouent le rôle important dans les produits solaires, ils capturent le soleil ’S énergie et la convertir en électricité afin que les produits solaires puissent fonctionner. Il existe trois principaux types de panneaux solaires PV sont les panneaux solaires monocristallins, polycristallins et à couche mince. Chacun de ces panneaux solaires PV est fabriqué de manière unique et a une apparence esthétique différente.   Panneaux solaires monocristallins Lorsque les gens mentionnent les panneaux solaires monocristallins, ils sont généralement connus comme utilisés pour les produits solaires de première qualité. Les principaux avantages des panneaux monocristallins sont des rendements plus élevés et une esthétique plus élégante que les autres panneaux solaires. Les panneaux solaires monocristallins sont fabriqués à partir d'environ 40 cellules solaires monocristallines. Ces cellules solaires sont fabriquées à partir de silicium pur. Le silicium est formé en barres et coupé en plaquettes, afin de fabriquer des panneaux solaires avec des cellules solaires monocristallines. Ces panneaux solaires sont appelés «monocristallins» pour indiquer que le silicium utilisé est du silicium monocristallin. Comme une cellule monocristalline est composée d'un monocristal, les électrons qui génèrent un flux d'électricité ont plus d'espace pour se déplacer. Par conséquent, les panneaux solaires monocristallins sont plus efficaces.   Panneaux solaires polycristallins De même que les panneaux solaires monocristallins, les panneaux solaires polycristallins sont également fabriqués à partir de silicium. Cependant, les cellules polycristallines sont constituées de fragments du cristal de silicium fondu ensemble.  Les cellules solaires polycristallines sont appelées «multi-cristallines» ou silicium à plusieurs cristaux. Il y a moins de liberté pour les électrons de se déplacer car les cellules solaires polycristallines sont de nombreux cristaux dans chaque cellule. En conséquence, les cellules solaires polycristallines ont des cotes d'efficacité plus faibles, mais leur avantage est un prix inférieur. De nos jours, les panneaux solaires polycristallins augmentent rapidement en popularité et en efficacité, même s'ils constituent un développement plus récent.   Panneaux solaires à couche mince Les panneaux solaires à couche mince ne sont ’Toujours fabriqués à partir de silicium, ils peuvent être fabriqués à partir de divers matériaux, tels que le tellurure de cadmium, le silicium amorphe et le séléniure de cuivre indium gallium, c'est la caractéristique la plus distinctive des panneaux à couche mince. Les panneaux solaires à couche mince sont le développement le plus récent de l'industrie des panneaux solaires.   Avantages des systèmes d'éclairage de rue solaires photovoltaïques 1.   Le système d'éclairage solaire PV fournit des sources d'énergie propres et vertes. Il n'est pas nécessaire de s'inquiéter des panneaux générant une substance nocive dans l'air. 2.   Il n'est pas nécessaire de payer pour les matières premières, car le système solaire photovoltaïque dépend de l'énergie solaire pour produire de l'électricité.  L'énergie solaire est naturelle, gratuite et disponible en abondance pendant une longue période. Les gens peuvent économiser sur les coûts d'électricité une fois qu'ils commencent à utiliser l'énergie générée par les cellules PV. 3.   Les systèmes solaires photovoltaïques peuvent générer de l'électricité n'importe où. Tout ce dont il a besoin est la lumière du soleil, ce qui en fait une source d'énergie utile dans l'environnement extérieur. 4.   Le système solaire photovoltaïque a un rôle important dans les réseaux d'énergie intelligente, qui fonctionnent sur la production d'électricité distribuée.  Il est très respectueux de l'environnement car il permet de réduire la production d'électricité dans les centrales centralisées. 5.   Les systèmes solaires photovoltaïques réduisent les coûts, ils sont également un système d'énergie renouvelable promu grâce au financement de subventions gouvernementales. 6.   Par rapport à d'autres systèmes d'énergie renouvelable, les systèmes solaires photovoltaïques sont connus pour leurs faibles coûts de maintenance et d'exploitation. 7.   Parce que les systèmes solaires PV sont silencieux et gagnés ’T produire n'importe quel bruit, ils sont parfaits pour les zones urbaines et les applications résidentielles. 8.   Les systèmes solaires PV sont faciles à installer.
Analysis and Prospect of Future Development trend of Solar Street Lamps
Analysis and Prospect of Future Development trend of Solar Street Lamps
  Analysis and Prospect of Future Development trend of Solar Street LampsClean energy is developed as a long-term strategy in the world, so there is a great need for solar energy in the future. Now more and more people know about solar street lamps, because they can often be seen on roads outside, even in rural areas, so solar street lamps have become an inevitable part of urban and rural lighting construction. Solar street lamp is becoming a new development trend, and leading the new development of lighting industry.It has the advantages of energy saving, environmental protection, safety, no wiring, easy installation, automatic control and so on. The main types of solar street lights are: solar pole lights, solar courtyard lights, solar road lights, solar lawn lights, solar landscape lights, solar signal lights.In today's era of rapid development, change is imperative. With regard to the development direction of solar street lights in the future, it will certainly develop in a direction that is more humane, more intelligent and more conducive to human health. The performance-to-price ratio of the product will continue to improve, and the field of application will be more and more extensive.Based on the above analysis, the future solar street lamp industry will mainly focus on the following three breakthroughs and innovative development.   First, it is more energy-saving and the technological content is constantly improving:In order to solve the problem of short service life of solar street lamps, better intelligent control technology and more efficient photoelectric conversion efficiency are needed. Intelligent control technology improves the efficiency of the use of electric energy, and both play a role in protecting the battery. The short service life mainly lies in the improper protection and use of the battery, that is, to control the deep charge and discharge of the battery. The second is to improve the luminous efficiency of the light source, the first way is to use more efficient luminous materials, but there is little room to improve the energy efficiency of LED street lamps. Then it is necessary to make rational use of electric energy through control equipment. Therefore, in this link, the controller is the key. The controller adopts digital control technology, and the same configuration controller can save electricity by 80%, and make rational use of electric energy to effectively protect the battery. The life of their products has also been greatly improved, and their street lamps generally extend their service life by 3-5 times longer than conventional solar street lights.   Second, it is intelligent and integrated with the technology of the Internet of things:In the future, with the development of smart cities, more intelligent technologies will be integrated with street lamps. Street lamps are installed in all streets of the city. At present, solar street lamps are also installed in most villages, which is an excellent carrier of intelligent equipment. With the development of technology, the remote control and self-test functions of street lamps can be realized, and traffic, security, cultural and entertainment equipment can be effectively added into the Internet of things technology, which makes street lamps serve the society more efficiently.Third, integrate more elements with cultural characteristics:The customization of street lamps is a major feature of the industry, but at present, the homogenization of solar street lamps is serious. In order to cope with the floor price bidding, solar street lamps generally have a simple shape, and street lamps with a sense of design copy each other. We can design solar street lamps with national cultural characteristics according to local characteristics. These solar street lights with national characteristics form a good match with the local landscape, architecture and national clothing, integrate in harmony with the environment, highlight the national characteristics, but also play a good lighting effect. Endowed with more artistic flavor and cultural connotation, this customized solar street lamp with humanistic characteristics will be a major trend of future development.
What Issues Should Be Faced with Promoting Philips Solar Led Street Light Price List?
What Issues Should Be Faced with Promoting Philips Solar Led Street Light Price List?
In recent years, philips solar led street light price list have been used more and more widely. It has been widely recognized by the society for its advantages of no need to lay cables, consume no conventional energy, and has a long service life. Many cities and villages have begun to promote the use of philips solar led street light price list in some areas and some roads in the form of trials or demonstrations. However, many industry experts pointed out that the promotion of philips solar led street light price list at this stage requires attention to some problems.Although the use of philips solar led street light price list has become more widespread, there are still some technical problems in the power, efficacy and service life of solar street light price list in nigeria project. According to experts, for township roads with narrow roads and low lighting requirements, low-power solar street light price list in nigeria project can meet lighting requirements; while urban roads with high lighting requirements for street lamps, solar street light price list in nigeria project have shortcomings: the light coverage is narrow and the brightness is not uniform enough. A few days ago, Zhuhai City promoted the use of some integrated led solar street light philippines price. The person in charge of the street lamp management office of the city said that after continuous observation of the brightness, illumination and storage capacity of integrated led solar street light philippines price, such as meeting the relevant standards of street lamps. It can be promoted to residential roads, parks, islands, industrial parks and townships. However, according to the current technical indicators of integrated led solar street light philippines price, the illumination cannot meet the requirements of urban main roads, so integrated led solar street light philippines price will not be replaced by solar lamps.In addition, the service life of solar panels also restricts the promotion of integrated led solar street light philippines price. Experts say that solar panels have low conversion rates and high cost. If you want the light to be on for a longer period of time, you should increase the configuration and match the components reasonably, rather than simply increasing the battery capacity. Moreover, there are still some artificial disadvantages, such as the arbitrariness of the system configuration is too large, so that the service life and lighting effects of the lamps are greatly reducedHonda City Back light price ?You need to go to atlas honda for the exact price as they keep on increasing it. Mine was changed in 2009, when the car came and at that time it cost around 6000 rupees. so it must have risen by now. you can also check olx.com and Pakwheels, sometimes people sell these items for less as they attach after market products. Hope that helps.How does a merchant ensure sufficient value in light of the price volatility?Normally it depends on your payment processor and the contract. Transaction is been given some time (mostly defined in a contract) where it is reserved as the value. Here the payment processor has to provide it regardless of the fluctation. For that reason payment processor does use fees and insurance/reinsurance is also a must for the payment processor.We had similar scenario with an ATM machine in one european country, it was very similar. I would also say that there are some speculating projects where in cooperation with another payment processor, the variety of what can be done is huge.I could write here more, but I think it would be offtopic, hope the info I wrote helpsWhy did fueling and lighting prices decline in the late 19th century?Mining Innovations and transportation The invention of the light bulb made lighting easier and cheaper than oil based lampsshould go back too my old amp?No , i think u can try this Kenwood KAC-9104D 1800-Watt Max Power 1 ohm Capability Class D Mono Power Amplifier with Variable LPF is amazing. With the gain over 3/4, it is TOO POWERFUL for any kind of conversation in my 08 Civic. I also bought a 1 Farad capacitor, because my headlights were dimming. This amp has not cut out once, even in near 100 degree heat and bumpin'. I recommend this amp because of it's flawless performance, light price, active cooling, and heavy hitting power. I am very impressed with this amp. @@@
Factory Direct Sale IP65 Waterproof Outdoor Cob 50W 100W 150W 200W 280W Led Street Light Fixture
Factory Direct Sale IP65 Waterproof Outdoor Cob 50W 100W 150W 200W 280W Led Street Light Fixture
Led street light fixture is different from conventional street lamp. LED light source adopts low-voltage DC power supply, high-efficiency white light synthesized by blue LED and yellow. It has unique advantages of high efficiency, safety, energy saving, environmental protection, long life, fast response speed, high color rendering index, etc. it can be widely used in the road. The outer cover can be made, with high temperature resistance up to 135 degrees and low temperature resistance up to — 45 degrees.Led street light fixture SL01 description 1、 Use imported integrated LED, high light efficiency, slow light depreciation 2、Die-casting aluminum shell, surface electrostatic spraying, anti-corrosion treatment 3、 The structure of the people-oriented design concept, easy for installation and maintenance 4、 V-shaped thermal conductivity and diversion fin design, dustproof, control the dissipation in good performance 5、 Power supply and lamp source circuit with the plug and play connectors, easy for installation and maintenance Led street light fixture technical principle Traditional Led street light fixture design focuses on the lumen number of LED, but less attention is paid to the heat dissipation. In fact, the lumens of LEDs are increasing rapidly. In 2009, the number of lumens per watt of mass-produced LED has reached 100 lumens, and this number is growing rapidly. The corresponding theoretical system of heat transfer has been mature, and the heat transfer means we can use are basically clear: conduction, convection, radiation and phase change heat transfer. Therefore, the measures we can take in heat transfer or heat dissipation are visible and limited. Led street light fixture SL01 specification Model No.: SL01–100W Power(W): 100W COB: 2 Light Efficiency: 100–150Lm/W Voltage(V): AC100–277V CRI(Ra): >70 Power Factor: >0.95 CCT(K): 30006000 Environment Temperature :-4050℃ Life Time(H) : ≥50000 Ctn/Pcs: 1 Packing size(mm) : 760×300×155 Model No.: SL01–280W Power(W): 280W COB: 4 Light Efficiency: 100–150Lm/W Voltage(V): AC100–277V CRI(Ra): >70 Power Factor: >0.95 CCT(K): 30006000 Environment Temperature :-4050℃ Life Time(H) : ≥50000 Ctn/Pcs: 1 Packing size(mm) : 1150×445×175Led street light fixture for saleLed street light fixture for sale,Shanghai JingRui lighting is a professional enterprise integrating research and design, production, sales and service.Our main products include Led street light fixture, LED Grow Light, HID Flood Light, Ballast and Bulb, etc. which are widely used for mobile light tower, construction sites, stadium, parking lot, road, ports and docks, etc. Free Quotes. Trained Specialists. Satisfaction Guaranteed. Led street light fixture Installation Hid lamp can be divided into three series: 900 series, H series and D series. (D series is usually Lens Series) 1. Please cut off power before installation or changing spare parts 2. Please read the specification printed on fixture carefully before using 3. Please make sure the wire connection is well insulated and waterproof 4. Only professionals can do installation and maintenance jr-lighting.com/sl01-15541027407846146.html.·RELATED QUESTIONWhy don't hotel rooms have ceiling lights?My hotel building is over 100 years old, so we have ceiling lights. We also need a ladder to change a bulb 11' from the floor. It can take 20 minutes for 1 bulb! This is one reason that we have changed to the longer lasting (and more economical) low-energy bulbs.I would be delighted to have wall lights instead. Retro-fitting them would however be even less economically sound.Higher than average ceilings mean ladders to change the bulbs in ceiling fittings, and this extends the maintenance time and convenience for staff enormously. Even normal height ceilings mean that a chair is needed to swap a bulb out. Wall fittings are so much more convenient for both staff and customers, reducing the time taken to get light again!As Michael Forrest Jones says - anything other than a simple bulb swap requires the power to be cut to the whole circuit (which may be more than just a few rooms). This makes it very awkward to do emergency repairs after dark! -- Been there done that... Go with wall fittings that can be isolated in-room!In short:I have ceiling lights.I don't like them, as they are awkward for maintenance.Replacing them would be expensive and extremely difficult - basically a total rewire of the hotel lighting system.Design engineers are not stupid. they note the first 2 points!
Purpose of Using the All in One Solar Street Light
Purpose of Using the All in One Solar Street Light
The solar street light serves many benefits to the user that gives the compact light solution in the street during the night time. It is becoming more and more important in the street and avoids the accident and other major problems in the road. We are leading manufacturer for providing the all in one solar street light in the street thus saves the power. It is a cost-effective option for the customer to buy this kind of light for the street purpose. It can also use in some home in the present days that reduces the electricity bill and others.We can make this type of light with the quality material that cannot damage the light source. It is designed by the professional team and ready to offer to you at a competitive price. We can maintain a good standard in the industry and required the international certification for our product. It is highly efficient and provides long performance and comes with a clean energy source. You can improve the surrounding environment with the pollution-free and emission-free. It is a wonderful choice for you to contribute to the global environment. It is an environment-friendly option for those who need this light. Benefits of our product:You can avail of more benefits with our product. You can call to our professional for buying this one with us. Once you place the order, they can immediately deliver the item at your doorstep. You cannot worry about how to buy the solar light and we can help you to find the best one suitable for the street. It is easy to install in street and another part. At the time of installation, this one requires the solar panel, LED light, battery, sensor and controller and lot more. You can buy these things for the solar light installation with us.This one saves the money and improves the performance of the light in a simple way. The market is flooded with different kinds of a manufacturer in this industry. You can pick the right one for your need and they produce the quality item to you as you need. Demand of the solar street light is increased day by day and produces the good result to you after using this. We can also directly install it in your home and street. It is the best way to improve the security in a perfect manner without any hassleFinding the illuminance from a triangular light sourceTriangles are as a general rule really bad for yielding an analytical solution upon integration over them - far moreso than might be supposed on the basis of just casting the matter in one's mind. It's kind of like that infinite grid of resistors problem in electrical engineering: you start off "could you not just ... but what if we ... surely if we set ... " and then it starts to dawn on you just how hard it is!.How can I avoid star effect on light sources on long exposure photos?You can make a physical mask with a circular hole much like people use to make the "shaped bokeh." This just becomes a larger pinhole camera.Challenge becomes how to make a nicely round hole in a fairly sturdy material. Consider using aluminum foil pierced with a pin or other small deviceWhat would a hollow sphere, with a mirrored interior wall, completely empty, apart from a subtle light source, reflect and look like? What does nothing look like?Good question - do not know. To work it out remember mirrors are equipotential surfaces and there should be an analytical solution for a sphere.Failing that use ray-tracingHelp! How can I quickly get rid of an annoying mosquito in my bedroom?Tell him to go home.(lol) Turn off all the light in your room and go into the hall or bath, turn on the light there.He will follow yor scent and the light source. When he arrives, BLAM!!! End of problem. Sleep.tight (and do not let the bed bugs bite)Observed speed of a receding light sourceIt all depends on what the meaning of the word "appear" is.In about eight years, you will see the ship land, and you will say "Ah. I see the ship landing at a place four light years away, so it must have landed four years ago". Does "appear" refer to what you see, or to the meaning you attribute to what you see after you've made the necessary corrections? If the first, the ship appears to land in eight years. If the second, it appears to land in four.An analogy: Suppose I stand really really far away from you. Would you say that I "appear" to have shrunk to half my height? By one meaning of the word "appear", the answer is clearly yes. By another, no, I do not appear to have shrunk, I just appear to be really far away, but to still be six feet tall
Frequently Asked Questions (FAQ) for Solar Street Light
Frequently Asked Questions (FAQ) for Solar Street Light
Is electricity understood well enough in Eberron to produce current and simple electrical devices?You are operating under a misconception: lightning and electricity in Eberron (and most D&D worlds) does not work like it does in reality. This is to some degree just simplification; it would not be fun to have to pull out Maxwell's equations every time an electrical attack happened. But this simplification does have some rather important side-effects.A prime example of this would be a character in full plate mail getting struck by lightning. In the real world, the fellow struck by lightning is completely protected thanks to his Faraday-cage / full plate armor. In D&D, the character is damaged (barring electrical resistances, immunities and other such effects). Another example is the lightning bolt spell itself. In 5e, for example, the spell produces a bolt of lightning five-feet across and 100-ft long. In the real world, if we produced enough voltage to cross a 100-ft long span of air, the bolt would ground itself out because the path of least resistance will be the 5-foot span directly downward. There are reasons stun batons have to basically make skin contact, and tasers have wires to direct the flow of electricity. Since electricity demonstrably behaves differently in Eberron than in reality, you should not expect electrical engineering solutions to work in Eberron either.This doesn't mean there aren't solutions in Eberron that would work even when hit by Dispel Magic, however. We had lanterns and torches long before we harnessed electricity, and cannon wicks have been around since the invention of the cannon------What are some of the startups in the field of smart energy and smart streetlighting in India?Photron Power- All-in-One Solar LED Street Lights Manufactures in India.Photron being a well known Solar LED Solar manufacture & Supplier in India is among the few LED street light manufactures in India. Our solar powered Street lights are designed and manufactured by our expert team using high quality imported raw materials and updated technology. All in one Solar Street lights provide cost effective, Maintenance free alternative energy solutions for illuminating streets, highways, housing colonies and commercial complexes. All in one solar street lights consist of solar panel, battery and LED and can be operated by solar energy.Use of LED Streetlights in India is economically viable and a better alternative for conventional lighting systems and to bring down the electricity bill drastically. Our Street lights are equipped with automatic motion sensors and dimmer settings to ensure maximum energy savingsIntegrated Solar LED Street Light- Benefits & FeaturesAll in one Integrated Solar LED Street Lights are becoming very popular in India to illuminate the streets due to its compact design and integrated features. The bulky conventional street lights are getting replaced by the the fancy Street lights with advanced features like Motion sensors and Specific spot lighting features. Integrated All In One Solar LED Street Light produces its own power and uses lowest power consumption technology. For complete information please check the belowALL-IN-ONE INTEGRATED SOLAR LED STREET LIGHTS 12W|15W|PHOTRON POWER------Which brand is the best for solar street lights?The impact of solar energy is gaining a huge amount of popularity all over the world with eventual progress in modern lifestyle. Starting from its influence on our daily basic needs to something pretty big and useful for the mass, solar energy has its hand. In a world where at least one effort is made towards making our environment a better place to live in, the everyday implementation of solar energy in various mass commodities in place of the normal electrical power supply is a huge initiative towards existential development. Solar energy is a very smart alternative in the field of energy production and is very easy to use in several fields. Streetlights assisted with solar energy supply for light production, are very much popular in the commercial market these days and is sold by different brands in the different price range. They come in different designs and meet the demands of the clients accordingly. It is very difficult to say which brand is the best for solar street lights since almost every electrical brand is replacing their commodities with solar power commodities and among all these popular and genuinely admirable brands, some are really trustworthy and have made remarkable progress online and offline. LOKOZO is one of them. LOKOZO has developed and has distinguished itself from the test with its expert strategies of product manufacture and marketing in the world of Solar energy and LED light supply. There is a wide range of products by LOKOZO which are making remarkable progress in the market and solar LED street lights is one of the best production of LOKOZO. The types of Solar streetlights produced and marketed by LOKOZO are· Solar LED streetlights- With the technology of solar energy and LED technology, these streetlights are designed according to the needs of our clients and have a very bright and widespread impact. This product is highly used in LED petrol stations lighting, airport lighting, transportation lighting, and service bay lighting. The features include long service life, high performance, excellent strength. · Solar street light with Bluetooth enabled and inbuilt MPPT Charge controller- These contain all the expert features of a solar street light with a Bluetooth enabled MPPT controller inbuilt to cancel out any power connectivity to radically diminish any power loss and give the purest output possible. The features include low power consumption, high power output, very reasonable cost, automatic ON/OFF button, battery charging inside the pole and digital loaf display.For more information on our products, log on to lokozo. inContact us offline at-Chikkahanumanthappa Building,n Rajivgandhi Nagar, Sunkadakatte,n Srigandhadakavlu,n Bangalore - 560091n Mail: Call Us : 91 080-2348-6675n Mob No. : 91 9448957343------Why can we not measure the distance to the Sun directly using Radar?My question is specifically WHY CAN WE NOT USE Radar to measure the distance to the Sun? By way of analogy, the path of a solar eclipse will cross the United States this summer. People are already being warned not to look directly at the Sun during the eclipse without protection. The reason of course is that looking at a partially eclipsed Sun may cause permanent damage to ones eyes. Most of that damage results from from the Sun's infrared rather than visible output. Just because one cannot see that infrared radiation does not mean it won't hurt you.The same applies to radio antenna. While radio antenna are typically designed to be insensitive to visible and infrared, an unprotected radio antenna, like an unprotected eye, will suffer irreparable damage when pointed at the Sun.What about a radio antenna protected by a radome? Those can be and are pointed directly at the Sun. What they see is a large body that radiates at an effective temperature well above the 5778 K of the surface of the Sun. The Sun's chromosphere can have an effective blackbody temperature in the microwave and radio frequencies in the tens of thousands of kelvins, and the solar corona, in the millions of kelvins.This is particularly the case when the Sun is active, a one to four year long period during the Sun's eleven year solar cycle. Solar scientists aim radome-protected radio antenna directly at the Sun because the deviations from blackbody radiation at 10.7 centimeters are highly correlated with deviations at short wavelengths. Scientists use the Sun's radiation at 10.7 cm as a bellwether of the Sun's activity.Suppose someone decides to ping the Sun with a radio antenna inside a radome while the Sun is quiet. Even during quiet periods, the Sun still outputs radiation in the microwave and radio frequencies with an effective temperature of nearly 10000 kelvins. The large output from the Sun in the microwave and radio frequencies will overwhelm that little ping, even when the Sun is at its quietest.Once again by way of analogy, think of pointing a flashlight directly at a street light. Flashlights work great when pointed at a somewhat nearby dark patch of ground. They don't do much at all when pointed at a more remote source of light
Advantages of Integrated Solar Street Light
Advantages of Integrated Solar Street Light
However, the source has a small opening angle, high brightness of the spot area, and strong directivity of light scattering. The light source is easy to form a spot, and the light uniformity is not good, which restricts its application in the lighting field. Nowadays, LEDs as the light source of the LCD screens are ubiquitous in the industry of LCD commercial display, such as touch screen kiosks, digital signages, video walls, interactive flat panel displays, and so on.Colored Stone Light Source - Jewelry Making CommunityCan the colored stone industry choose a standard light source from the multitude on the market? What does a worker sorting colored gems in a shack in Sri Lanka have in common with the salesperson in a tony Manhattan jewelry showroom? In both settings, the type of light they use will make the difference in the color and the cash value of their gems. Color is the most important aspect of a colored stone, and differences in lighting will alter the way a stone's color is perceived by grader, dealer, and, ultimately, customer. When lighting sources are inconsistent, it can cost dealers thousands of dollars. At the same time, tricks of the trade that enhance certain colors for sale can cost the industry in terms of credibility. That is why many involved with colored stones are calling for a lighting standard. "Your industry's crying for help because they have no standard available," said Nick Lena, product marketing manager for lighting manufacturer GretagMacbeth, New Windsor, New York, who has spoken to various groups on the issue. "I was totally amazed at some of the horror stories I heard," said Lena . Gemstone dealers lose thousands of dollars alone in airplane fare traveling back and forth because the stone grading is incorrect, he said. "People who have never been color tested, in a dimly lit shack in a Third World country, are making color decisions" that determine whether their companies make or lose money. "I have a partner in Tanzania and a cutting factory in Sri Lanka and an office in Santa Barbara . There are too many disagreements on the color grading of what I receive and what I send off," said Dana Schorr, owner of gem wholesale business Schorr Marketing & Sales, who is an outspoken advocate of a lighting standard. Another problem occurs when dealers use light to enhance the color of a stone to a degree approaching fraudulence. "There are people in the [American Gem Trade Association] shows that artificially enhance stones with light that will make them look good. I've seen people selling rubies with red light," said Schorr. "A colored gemstone's value is based on color. A ruby that's purplish has less value than [one that's] red. The change in value is tremendous." Why has the colored stone industry lagged behind other industries, including textiles, plastics, printing, and automotive, in developing a lighting standard? "One reason we do not have a standard is we have a fractured trade," suggested Schorr. "It has to come from a coalition in the trade. We have to work with scientific experts. Once we have lights that really do the work, we go before the American Society of Standards and they set up a scientific committee." The one thing that everyone does agree on is that the ideal lighting would be the one that most closely replicates daylight. Daylight is defined as the white light caused by a mixture of yellowish sunlight scattered from a bluish, moderately overcast sky. However, even this simple stipulated point opens a Pandora's Box. Which daylight? Early morning or noon ? Is that noon in Bangkok or Manhattan ? And is it a clear blue sky, or the polluted skies over most major cities? "We've agreed that indirect north, noon daylight is the best light, and is considered standard," said Schorr. "However, the spectral output of the sun changes from day to day, even moment to moment. You have this floating point" that is influenced by pollutants, moisture in the atmosphere, latitude, and time of year. Natural, or white, daylight is composed of an approximately equal mixture of all the wavelengths in the visible color spectrum. An object gives the effect of color by absorbing certain wavelengths and reflecting others. The gemstone industry generally uses two standard methods to quantify how light affects color: Color Temperature (CT), a convenient, one number method expressed in degrees Kelvin, and Spectral Power Distribution (SPD), which breaks a light source into its component colors and then measures the amount of light energy present for each color. The SPD is represented graphically by a curve. Natural daylight will appear as a more or less even line, whereas most artificial light sources register peak and valleys where they are strong or weak in a particular color. A spike in red energy, for example, means that that light source enhances reds. The CT scale relates the color of light emitted from an object to its temperature, measured in degrees Kelvin. "Think about heating up a nail," explained Philip Bradfield, Ph.D., vice president of light manufacturer Tailored Lighting Inc. "First, the color is deep red. Add more energy, it goes from red to orange, to yellow, to white. If you keep going, and it does not melt beyond white hot, the light would look a bluish hue." Bradfield outlined the Kelvin scale: 2300K is horizon light, with warm orange tones; 4100K is a cool white fluorescent color; 4700K to 5700K is direct midday sunlight; and over 10,000K is a clear blue sky in the shade. Color temperature is used in determining the Color Rendering Index (CRI), a commonly used measure of how well a light source reproduces a given standard light. Lamps with a CT below 5000K are compared to a tungsten filament (incandescent) lamp, while lamps above 5000K are compared to a correlated phase of daylight. The maximum rating is 100; lamps with a rating of 90 or above are considered good for color evaluation. Remember when the jeweler would lead his customer over to the shop window to get a better look at her gemstone? Today, gems are graded and displayed under any number of brandname lamps, which can be incandescent (including tungsten halogen and metal halide) or fluorescent. Every manufacturer maintains that his is as close as possible to the ideal of natural daylight. The choice is the dealer's. The variety of light sources used by gem sellers can be surprising. "When I went to the Tucson [show], I saw hand held UV [ultraviolet] lamps, big fluorescent fixtures, desk lamps, and people selling fluorescent lamps you could find at Home Depot," said Lena . "Because I am a scientist, I spent most of my time laughing. . . . It was kind of sad, and it was kind of comical." Different light sources have different effects on the color of gemstones, either enhancing or dimming the true color. But although the effect of the various types of light on color is predictable, opinions on the best light to use for color grading vary. The most neutral light, and the optimal level for grading colored stones and diamonds, is from 5000K to 5500K in color temperature, said gemologist Howard Rubin, creator of the GemDialogue System, a system for grading color using 21 transparent color charts. When you approach 6000K and over, the light source becomes too blue. Achieving that level is more important than using a particular brand, he said, because lighting manufacturers combine different elements to get the balance of color. Rubin did recommend fluorescent lights in the 5000K to 5500K range for grading; halogen desk lamps "get too hot," he said. However, halogen lamps "come close to neutral and are used nicely in showcases. There's nothing wrong with using them to display merchandise." "Not all daylight bulbs are truly daylight, because some have more yellow, a little more red," said Shannon DeMulin, a diamond specialist with Rio Grande in Albuquerque , New Mexico . "You could have two lights, look at a ruby under one and it looks beautiful, and under the other and it looks icky." DeMulin said her company uses General Electric daylight corrected bulbs to grade colored stones and diamonds. She also stressed that overhead lighting, not just the desk bulb, should be color corrected. Incandescent lights, which are defined by the presence of filaments, have a yellowish cast because they have more energy in the warm (red orange yellow) end of the spectrum. Incandescent light will enhance yellow sapphires, for instance. Tungsten halogen, a type of incandescent light, is typically used in many jewelry stores. The advantage is that it simulates home lighting and, because it is a point source, will show light reflected from all facets of the jewel. While the light will greatly enhance yellow red, it is deficient in blue-green, making those stones appear subdued. Metal halide is a popular light source that produces a whiter light than the warmer and more yellow halogens. Lena criticizes it as lighting, however, because it has a "very high level of ultraviolet energy" with multiple spikes in green and orange on the SPD curve and little red energy. Fluorescent lamps are low pressure mercury vapor lights with fluorescing coating, or phosphors. Fluorescent lamps with fewer than three phosphors will have spikes and depressions in the SPD; more phosphor coatings are added to eliminate color exaggeration. At Stuller Settings in Lafayette , Louisiana , the gemstone department is satisfied with the 5000K to 5500K Philips fluorescent bulb they have been trying out. "It's more color corrected and closer to daylight than a regular daylight bulb," said Joe Orlando, department director and buyer. "No incandescent or halogen replicates [daylight] as closely as the fluorescent." At trade shows, Stuller uses standard fluorescent lighting in showcases and special halogens overhead at daylight temperatures for presentation. For display of alexandrite, which is either red or green depending on the light source, they use a special display box that alternates between fluorescent and incandescent light. There are a number of companies which market lighting systems specifically to the gemstone industry, each of which claim to imitate daylight. One popular model is the halogenbased SoLux daylight lamp, manufactured by Tailored Lighting Inc. The SoLux is a light source with a special filtering approach, available in four CTs: approximately 3000K, 3500K, 4100K, and 4700K. The 4100K, the whitest light, is suitable for colored gems because it is closest to daylight, said vice president Bradfield. SoLux replicates natural daylight "as closely as possible," for an indoor light source, said Kevin McGuire, company president. "We are replicating to adjust to indoors with the shifting from rods to cones. . . . Our approach is it's best to have a man made source because it is constant as you use different amounts of light. [And] it's best to have a daylight replication because it presents all the colors equally." Ott Lite Technology manufactures a filtered fluorescent light based on a "proprietary formulation" of multiple phosphors to replicate the optimal balance of the color spectrum seen in natural daylight. "The problem with tungsten halogen is it's very hot," said Ott Lite President Fred Mendelsohn. "Anything very hot has to be high in infrared, which is high yellow and high red." "Halogen by itself provides the sparkle but does not provide the true colors," agreed Lena of GretagMacbeth, which manufactures a filtered tungsten halogen desk lamp called SolSource in CTs of 5000K, 6500K, and 7500K, which is designed to provide color balance approximating daylight. GretagMacbeth also manufactures the SpectraLite Viewing Booth, which has options for filtered tungsten halogen, incandescent, fluorescent, and ultraviolet light, and the Judge II, a small fluorescent viewing booth. "In general, I am skeptical about fluorescent lamps because major lamp manufacturers love to make high efficiency fluorescent daylight sources that are not suitable for viewing colors," said Lena . He explained that fluorescent lights tend to be very weak in red energy, while they are good at rendering blues and greens. So while a fluorescent light may have a high CRI especially at temperatures of less than 5000K, where it is being compared to an incandescent light rather than daylight its effectiveness at rendering blues and greens "cancel out" its poor rendering of reds. What are the things to consider for an industry wide lighting standard? Lena , who is consulting with Schorr on developing such a standard, said that companies will need a directional point source, a neutral surrounding, and light levels higher than the typical jewelry store. Personnel should also be required to be color vision tested, he added. Neither would the industry have to "reinvent the wheel," he pointed out, referring to existing standards by organizations such as the American Society of Testing Materials, which has visual and instrumental standards for solid to translucent materials which could be applied to gems. In terms of measurement and rating, Schorr questions both the CT systems and the CRI, calling them less than ideal. "Both CRI and Kelvin are false standards, used to trick the trade and consumer. I can get three fluorescent lights with the same Kelvin rating and to the eye each light looks different," he said. "Kelvin is not without meaning. It's just too broad a range as a standard." The CRI system is also misleading, he added. If a lamp is rated over 5000K, it is being based on daylight; but if the Kelvin is below 5000K, the color index is based on incandescent light. "How can we listen to a lamp [sales] person when . one is saying his product is great because it compares to daylight, while the other says theirs is good because it compares to [incandescent]?" Most lighting manufacturers, Lena pointed out, will try to keep their color temperature under 5000K to avoid comparisons to natural daylight. "Yes, it's easy to get a 98 CRI when you are comparing [the light] to an incandescent," he said. "But if you push the temperature to 5000K, the CRI will drop to 60 or 70." "The only truly accurate, reputable, measurable means of comparing light [sources] is the spectral power curve, or the spectral output of the color," concluded Schorr. "All the major lighting companies have the equipment. The technology is there, the ability to create a standard, to measure and have accurate reproducibility is there. We have agreed what the spectral output should be and what variation is allowable." But the industry still has a long way to go, agree lighting and colored stone experts, before it achieves a standard. • Webster, R. Gems: Their Sources, Descriptions, and Identification. 5th ed. Oxford , England : Butterworth Heinemann Ltd., 1994.
Factory Price LED Public Lighting All in One IP66 50w 60w Led Street Light
Factory Price LED Public Lighting All in One IP66 50w 60w Led Street Light
Nowadays, in the city lighting system, there are many LED public lighting to choose from. Among them, LED public lighting is one of the first choice lamps in many municipal engineering construction. Can you tell us why this kind of lamp is widely used? 1、 No waste of energy At present, LED street light is an important part of urban lighting, and it can ensure a very good effect of road lighting. Generally, the traditional street lamp is very energy-saving, because it uses high-pressure sodium lamp to light. So the light loss of this kind of street lamp is very large, which will cause the waste of energy. If the city lighting system uses LED street lights, it will not cause a huge waste of energy. So this kind of street lamp can have a wide range of applications. 2、 Alleviate power supply shortage At present, one of the problems that the whole world needs to face is that the environmental deterioration is becoming more and more serious. So for every country, we need to urgently develop clean energy. If the city lighting system uses this kind of LED lamps, it can alleviate the problem of energy intentional contradiction in our country. At present, China’s national economy is growing rapidly, and the power supply and demand is very short. But led street lamps use solar energy to generate electricity, so it can solve the problem of power supply and demand. 3、 It can replace the traditional light source very well As a very novel energy source, this led street lamp can replace the traditional street lamp lighting very well. Because it can achieve energy-saving and efficient, not only that, when lighting can also ensure its service life. From this point of view, as a very important lighting system of the city, it is well-known. In any case, in order to cope with the current situation of rapid urbanization, the use of LED street lighting is the general trend. This kind of lighting equipment is also very novel and efficient, and has a good display index. It is of great significance for energy saving of urban lighting. LED public lighting SL17 description 1、 Integrative heat dissipation technology for light fixture,and high efficiency heat dissipation performance. 2、 All-metal structure,built-in power supply. 3、Double coupling IP66 protection,ultra high waterproof and dust-proof rating. 4、 Human efficacy light distribution,uniform street lighting. 5、 Regional lighting(municipal square,commercial area,parking lot,etc.) 6、 Street lighting(underground passages,residential areas,overpass,etc.) Technology of LED public lighting The radiator of LED public lighting adopts hollow honeycomb structure, which can form air convection at the upper and lower ends of the radiator, increase its strength and heat dissipation area, and improve the radiator capacity of LED street lamp. At the same time, the upper end of the radiator is equipped with a drainage channel to automatically discharge rainwater. The honeycomb radiator and current controller installation box of LED street lamp are composed of a hollow heat sink in the form of a grid formed by one-time die casting. The middle part of the lower end face of the honeycomb radiator is fixedly provided with an installation platform, which closes the bottom end of the heat sink in the middle part, and the installation platform is fixedly connected with an LED chip, and the LED chip outer cover is provided with a lens, and the scattered The cross section of the heat sink is hexagonal, and the inner wall of the heat sink is provided with reinforcing ribs. The side walls between the fins in the middle of the honeycomb radiator are conductive to form a plurality of drainage channels, and the two ends of the drainage channels are respectively extended to the outside of the installation platform. The lower end of the honeycomb radiator is fixedly installed with a lamp shell. The hollow honeycomb structure can form air convection at the upper and lower ends of the radiator, increase its strength and heat dissipation area, and the upper end face of the radiator is provided with a drainage channel to automatically drain the rainwater. Compared with other radiators, the same heat dissipation area consumes less materials and has higher strength, and the drainage circuit solves the problem of dust accumulation. LED public lighting SL17 specification Model No.: SL17–50w Power: 50W Light Efficiency: 100150Lm/w Voltage: AC100–240V CRI(Ra): >70 Power Factor: >0.95 CCT(K): 30005700 Temperature: -4050℃ Life Time(H): ≥50000 Model No.: SL17–60w Power: 60W Light Efficiency: 100150Lm/w Voltage: AC100–240V CRI(Ra): >70 Power Factor: >0.95 CCT(K): 30005700 Temperature: -4050℃ Life Time(H): ≥50000 LED public lighting for sale LED public lighting for sale,Shanghai JingRui lighting is a professional enterprise integrating research and design, production, sales and service.Our main products include LED public lighting, LED Grow Light, HID Flood Light, Ballast and Bulb, etc. which are widely used for mobile light tower, construction sites, stadium, parking lot, road, ports and docks, etc. Free Quotes. Trained Specialists. Satisfaction Guaranteed. LED public lighting Services&FAQ 1.Can I have a sample order for led light? Yes,we welcome sample order to test and check quality,Mixed samples are acceptable. 2.What about lead time? Sample needs 3–5 days,mass productions time needs about 25 days for large quantity. 3.ODM or OEM is acceptaed? Yes,we can do ODM&OEM,put your logo on the light or package both are available. 4.Do you offer the guarantee for the products? Yes,we offer 2–5 years warranty to our products. 5.How do you ship the goods and how long does it take to arrive? We usually ship by DHL,UPS,FedEx or TNT.It usally takes 3–5 days to arrive.Airline and shipping are also optional. 6.Do you have any MOQ limit for the led light order? Low MOQ,1pcs for sample checking is available. 7How to proceed an order for led flood light? Please contact me if you are interested in our LED products.Send inquiry to me or talk with me online. Then I can quote you according to your requirement.You could buy same samples for checking or place bulk order directly. 8.How is the after sales service? we have a professional team which is in charge of after-sales service,also a service hot-line dealing with your complains and feedback. 9.Any discount available for the big quantity order? The price for our LED products can be negotiated if you have big quantity order or some projects in hand. jr-lighting.com/sl17–15783054468965933.html.·RELATED QUESTIONWhat times does Tribute in Light display outside of September 11, 2012?Located at West and Morris Streets in Lower Manhattan, the tribute of lights will begin at sunset of 9/11 (7:11pm) and fade away at dawn on September 12th (6:43am), though no formal service will be held. The Tribute is comprised of 44 7,000-watt xenon light bulbs arranged into two 48-foot squares inspired by shape and orientation of the twin towers. The Memorial illuminates up to 4 miles in the sky and can be seen from up to 30 miles away.
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