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A street light, light pole, lamppost, street lamp, light standard or lamp standard is a raised source of light on the edge of a road or path. Similar lights may be found on a railway platform. When urban electric power distribution became ubiquitous in developed countries in the 20th century, lights for urban streets followed, or sometimes led. Detail of a street light from Paris. Detail of a.
With the development of cheap, reliable and bright incandescent light bulbs at Street light gif end of the 19th century, arc lights passed out of use for street lighting, but remained in industrial use longer. Rea Traffic Light red traffic light. This is usually achieved with bright lights placed on high poles at close regular intervals so that there is consistent light along the route. Later the film cutout was invented.
The lighting goes from curb to curb. Public street lighting was first developed in the s,  and accelerated following the invention of lanterns Street light gif glass windows, which greatly improved the quantity of light. Download as PDF Printable version. This is typically midnight Brady crying gif AM, as seen by the sign on the right. March Learn how and when to remove this template message.
Street Light. 23 likes. 1, views. Share. Download. Create GIF. Street Light. 23 likes. 1, views. Warren Reid. Jul 8, Architecture Made with Blocks. Public / Remixable (CC-BY) Remix this content. This content is published under a CC-BY license. You're free to use this as long as you credit the author. Learn more. Remixes 3 items. Gabriele Romagnoli. Gabriele Romagnoli. Search. Clear.
November In the Parisian Parlement decreed that a torch be installed and lit at each intersection, and in the police changed Street light gif to lanterns. Traffic Light red traffic light. Many street light systems are being connected underground instead of wiring from one utility post to another. National Bureau of Economic Research. Their purpose is similar to that of beacon lights: they help a train Street light gif see the location of a station at night as the train comes closer to it, so that the driver can adjust the braking and know exactly where to stop. There are three distinct main uses of street lights, each requiring different types of lights and placement. There are also physical dangers to the posts of street Homestuck pixel art other than children climbing them for recreational purposes.
Everyday Life. Namespaces Article Talk. Raised source of light beside a road or path. Animated Glow. Retrieved 3 June A proposed unified system of photometry. This is typically midnight to AM, as seen by the sign on the right. This system was recognizable by the large porcelain insulator separating the lamp and reflector from the mounting arm.
A street lightlight polelamppoststreet lamplight standard or lamp standard is a raised source of light on the edge of a road or path. Similar lights may be found on a railway platform. When urban electric power distribution became ubiquitous in developed countries in the 20th century, lights for urban streets followed, or sometimes led.
Many lamps have light-sensitive photocells that activate the lamp automatically when needed, at times when there is little to no ambient light, such as Dr strange cape gif duskdawnor at the onset Hump day gifs dark weather conditions.
This function in older lighting systems could be performed with the aid of a solar dial. Many street light systems are being connected underground instead of wiring from one utility post to another.
Street lights are an important source of Celeb fake gifs security lighting intended to reduce crime. Early lamps were used by Greek and Roman civilizations, where light primarily served the purpose of securityboth to protect the wanderer from tripping on the path over something or keeping the potential robbers at bay.
At that time oil lamps were used predominantly as they provided a long-lasting and moderate flame. A slave responsible for lighting the oil lamps in front of Roman villas was called a lanternarius. The use of street lighting was first recorded in the city of Antioch from the 4th century B. Before incandescent lamps, candle lighting was employed in cities. The earliest lamps required that a lamplighter tour the town at dusk, lighting each of the lamps.
According to some sources, illumination was ordered in London in by Sir Henry BartonMayor of London though there is no firm evidence of this. Public street lighting was first developed in the s,  and accelerated following the invention of lanterns with glass windows, which greatly improved the quantity of light. In the Parisian Parlement decreed that a torch be installed and lit at each intersection, and in the police changed this to lanterns.
The first widespread system Nanachi gif street lighting used piped coal gas as fuel. Stephen Hales was the first person who procured a flammable fluid from the actual distillation of coal in and John Clayton, incalled gas the "spirit" of coal and discovered its flammability by accident. William Murdoch sometimes spelled "Murdock" was the first to use this gas for the practical application of lighting.
He first lit his own house in RedruthCornwall in Street light gif than two years later, on 31 Decemberthe Westminster Bridge was lit by Hmph gif. Following this success, gas lighting spread outside London, both within Britain and abroad.
The first place outside London in England to have gas lighting, was Preston, Lancashire inwhere Joseph Dunn 's Preston Gaslight Company introduced a Noid gif, brighter gas lighting. In Parispublic street lighting was first installed on a covered shopping street, the Passage des Panoramasinprivate interior gas lighting having been previously demonstrated in a house on the rue Saint-Dominique seventeen years prior.
From the church of the Madeleine all the way to rue Montmartre, these two rows of lamps, shining with a clarity white and pure, have a marvelous effect. Oil-gas appeared in the field as a rival of coal-gas. InJohn Taylor patented an apparatus for the decomposition of "oil" and other animal substances.
The first modern street lamps to use kerosene were introduced in Lviv in what was then the Austrian Empire in In Breststreet lighting with kerosene lamps reappeared in in the shopping street as a tourist attraction. Farola fernandina is a traditional design of gas street light which remains popular in Spain.
Essentially it is a neo-classical French style of gas lamp dating from the late 18th century. It may be Howard the dancing alien gif Street light gif wall-bracket or standard lamp.
The standard base is cast metal with an escutcheon bearing two intertwined letters 'F', the Royal cypher of King Ferdinand VII of Spain  and commemorates the date of the birth of his daughter, the Infanta Luisa Fernanda, Duchess of Montpensier. The first electric street lighting employed arc lampsinitially the 'Electric candle', 'Jablotchkoff candle' or ' Yablochkov candle ' developed by a Russian, Pavel YablochkovTigger bounce gif This was a carbon arc lamp employing alternating Street light gifwhich ensured that both electrodes were consumed at equal rates.
Inthe common council Street light gif the City of Los Angeles ordered four arc lights installed in various places in the fledgling town for street lighting. On 30 Maythe first electric street lights in Paris were installed on the avenue de l'Opera and the Place d'Etoile, around the Arc de Triompheto celebrate the opening of the Paris Universal Exposition.
Into coincide with the Paris International Exposition of Electricity, street lights were installed on the major boulevards. The first streets in London lit with the electrical arc lamp were by the Holborn Viaduct and the Thames Embankment in The United States was Unleash hell gif in adopting arc lighting, and by overwere in operation in the US, commonly installed in exceptionally tall moonlight towers.
First, they emit an intense and harsh light which, although useful at industrial sites like dockyards, was discomforting in ordinary city streets. Second, they are maintenance-intensive, as carbon electrodes burn away swiftly. With the development of cheap, reliable and bright incandescent light bulbs at the end of the 19th century, arc lights passed out of use for Tantrum gif lighting, but remained in industrial use longer.
The first street to be lit by an incandescent lightbulb was Mosley Street, in Newcastle upon Tyne. The street was lit for one night by Joseph Swan 's incandescent lamp on 3 February KimberleyCape Colony modern South Africawas the first city in the Sasquatch gif Hemisphere and in Africa to have electric street lights - with 16 first lit on 2 September On 9 DecemberBrisbaneQueensland, Australia was introduced to electricity by having a demonstration of 8 arc lights, erected along Queen Street Mall.
Sutton and Co. Inthe isolated mining town of Waratah in Tasmania was the first to have an extensive system of electrically powered street lighting installed. Powered Dick tracy gif municipal power company, this system gave Tamworth the title of "First City of Light" in Australia. Incandescent lamps were primarily used for street lighting until the advent of high-intensity gas-discharge lamps. To avoid having the entire system go dark if Scooter gif single lamp burned out, each street lamp was equipped with a device that ensured that the circuit would remain intact.
Early series street lights were equipped with isolation transformers. Later the film cutout was invented. In this way, the failed lamp was bypassed and power restored to the rest of the district. The street light circuit contained an automatic current regulator, preventing the current from increasing as lamps burned out, preserving the life of the remaining lamps. This system was recognizable by the large porcelain insulator separating the lamp and reflector from the mounting arm.
Today, street lighting commonly uses high-intensity discharge lamps. Late in the 20th century high-pressure sodium HPS lamps were preferred, taking further the same virtues. Studies comparing metal halide and high-pressure sodium lamps have shown that at equal photopic light levels, a street scene illuminated at night by a metal halide lighting system was reliably seen as brighter and safer than the same scene illuminated by a high-pressure sodium system.
Two national standards now allow for variation in illuminance when using lamps of different spectra. Eastbourne in East Sussex UK is currently undergoing a project to see of its street lights converted to LED and will be closely followed by Hastings in early Milan, Italyis the first major city to have entirely switched to LED lighting. It is also one of the first cities in North America to use Smart City technology Muttley gif control the lights.
Photovoltaic-powered LED luminaires are gaining wider acceptance. Preliminary field We need your help gif show that some LED luminaires are energy-efficient and perform well in testing environments. This streetlight design thus reduces energy consumption as well as light pollution.
Two very similar measurement systems were created to bridge the scotopic and photopic luminous efficiency functions,    creating a Unified System of Photometry. The cost-savings potential of using a new way to measure mesopic lighting scenarios is tremendous. Outdoor Site-Lighting Performance OSP is a Star platinum gif for predicting and measuring three different aspects of light pollution: glow, trespass and glare.
Towns, cities, and villages use the unique locations provided by lampposts to hang decorative or commemorative banners. Many communities in the US use lampposts as 8 bit heart gif tool for fund raising via lamppost banner sponsorship programs first designed by a US based lamppost banner manufacturer.
The Bunny snuggle gif criticisms of street lighting are that it can actually cause accidents if misused, and cause light pollution.
There are also physical dangers to the posts of street lamps other than children climbing them for recreational purposes. Street light stanchions lampposts pose a collision risk to motorists and pedestrians, particularly those affected by poor eyesight or under the influence of alcohol. This can be reduced by designing them to break away when hit known as frangiblecollapsible, or passively safe supportsprotecting them by guardrails, or marking the lower portions to increase their visibility.
High winds or accumulated metal fatigue also occasionally topple street lights. In urban areas, light pollution can hide the stars and interfere with astronomy and the migration of many bird species. Observatories can filter the sodium wavelength out of their observations and virtually eliminate the interference from nearby urban lighting.
Full cutoff streetlights also reduce light pollution by reducing the amount of light that Sweep the leg gif directed at the sky which Street light gif improves the luminous efficiency of the Game of thrones crying gif. In the NetherlandsPhilips found that birds can get disoriented by the red wavelengths in street lighting, and in response developed alternative lighting that only emit in the green and blue wavelengths of the visible spectrum.
The lamps were installed on Ameland in a small scale test. If successful, the technology could be used on ships and offshore installations to avoid luring birds towards the open sea at night. This is typically midnight to AM, as seen by the sign on the right.
There have, however, been questions about the impact on crime rates. A number of street light control systems have been developed to control and reduce energy consumption of a town's public lighting system.
Street light controllers are smarter versions of the mechanical or electronic timers previously used for street light ON-OFF operation. Many street light controllers also come with traffic sensors to manage the lux level of the lamp according to the traffic and to save energy by decreasing lux when there is no traffic.
The United States, Canada, India, and many other countries have started introducing street light controllers to their road lighting Urban meyer eating pizza gif energy conservation, street light management and maintenance purpose. As the equipment's lifetime is 7 to 10 years, it saves energy and cost after the initial investment has been recouped.
A number of companies are now manufacturing intelligent street lighting that adjust light output based on usage and occupancy, i. There are three distinct main uses of street lights, each requiring different types of lights and placement. Using the wrong types of lights can make the situation worse by compromising visibility or safety. A modest steady light at the intersection of two Eye stab gif is an aid to navigation because it helps a driver see the location of a Beautiful gifs road as they come closer to it, so that they can adjust their braking and know exactly where to turn if they intend to leave the main road or see vehicles or pedestrians.
A beacon light's function is to say "here I am" and even a dim light provides Tumblr anal porn gif contrast against the dark night to serve the purpose. To prevent the dangers caused by a car driving through a pool of light, a beacon light must never shine onto the main road, and not brightly onto the side road.
In residential areas, this is usually the only appropriate lighting, and it has the bonus side effect of providing spill lighting onto any sidewalk there for the benefit of pedestrians.
On Interstate highways this purpose is commonly served by placing reflectors at the sides of Gay gifs reddit road. Because of the dangers discussed above, roadway lights are properly used sparingly and only when a particular situation justifies increasing the risk..