A street light, also known as a light standard, is a raised light on the edge of a road, turned on or lit at a certain time every night. Modern lamps may also have light-sensitive photocells to turn them on at dusk and off at sunrise, or activate automatically in foul weather. It is also not uncommon in the United States for street lights to be on posts which have wires strung between them (telephone poles or electrial poles).
Many residents favor street lights in their neighborhood and around town as they make it easier to navigate at night, and their proponents claim they also help reduce crime. A variety of studies have supported this view but at least one indicated that it had little or no effect. The major criticism of street lighting, however, is that it can cause light pollution, the example to the left being an example of the more egregious offenders.
In urban areas, this light pollution can hide the stars and interfere with astronomy. In settings near astronomical telescopes and observatories, low pressure sodium lamps may be used. These lamps are advantageous over other lamps such as mercury and halogen lamps because low pressure sodium lamps emit lower intensity, monochromatic light. Observatories can filter the sodium wavelength out of their observations and virtually eliminate the interference from nearby urban lighting.
See also
History of street lighting in the United States
External links
Home Office Research Study 251 (http://www.homeoffice.gov.uk/rds/pdfs2/hors251.pdf)
The influence of street lighting on crime and fear of crime (http://www.homeoffice.gov.uk/rds/prgpdfs/fcpu28.pdf)
Let’s face it, the mini playfield “Streetlamp” on Twilight Zone is ugly and blocks the view of the Gumball Machine.
This kit allows you to remove the ugly “streetlamp” which lights the mini playfield, yet keep all of the original lighting effects.
The two general illumination lamps are installed as follows: one is placed under the plastic at the top left of the powerfield to illuminate the gumball machine, the other goes under the left side of the playfield plastic which is above the defeat the power hole at the top of the powerfield.
He contends that when the jury found that Puget Power negligently permitted its streetlamp to become charged, it necessarily should have concluded that were it not for such leakage there would have been no electrical shock causing the fall from the pole.
Brashear should have presumed the streetlamp was energized and either avoided it in his climb or used a temporary bond between the streetlight bracket and a ground source.
The evidence shows that Brashear lost his balance and fell when he received the shock from the streetlamp, but the evidence does not support the jury's conclusion that Puget Power's negligence was not a proximate cause of the fall and resulting injuries.
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