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Some street lights in New York City have an orange or red light on top of the luminaire (light fixture) or a red light attached to the lamppost. This indicates that near to this lighting pole or in the same intersection, there is a fire alarm pull box. [ 92 ]
A twilight switch is an electronic component that allows the automatic activation of a lighting circuit when natural light drops in a given environment. Among a large number of uses, the most common is to enable automatic lighting of streets, roads, highways, roads, gardens, courtyards, etc., when sunlight drops below a certain level (e.g.: a ...
Street lights can be made intelligent by placing cameras or other sensors on them, which enables them to detect movement (e.g. Sensity's Light Sensory Network, GE's "Currents", Tvilight's CitySense). [5] [6] Additional technology enables the street lights to communicate with one another. Different companies have different variations to this ...
Urban Light is composed of 202 street lamps arranged in a near grid. The lamps mostly came from the streets of Southern California, including Hollywood, Glendale, and Anaheim, with some from Portland, Oregon. There are 16 different streetlight models represented, many of which were commissioned for particular neighborhoods and streets. [3]
The shape of the LED street light depends on several factors, including LED configuration, the heat sink used with the LEDs and aesthetic design preference. Heat sinks for LED street lights are similar in design to heat sinks used to cool other electronics such as computers and smart street light energy saving systems. Heat sinks tend to have ...
In New York, more than 1,600 oil lamps were in use as city street lights in 1809. [1] The city had started using spermaceti oil, which burned more brightly than candles, in its street lamps from as early as 1792. [1] Philadelphia was close behind during this period, with 1,100 street lamps. [1]
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