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A street lamp mounted on a bracket and column A high pressure sodium street light fixture. Street light interference, sometimes called high voltage syndrome, is the claimed ability of individuals to turn street lights or outside building security lights on or off when passing near them. [1]
Aug. 8—Why it matters: The official passing of the incandescent light bulb has gone by with little notice, a testament to the fact we can get rid of wasteful old technologies. It was more than ...
The last time the Superdome hosted a Super Bowl, the lights went out in the middle of the third quarter, causing a 34-minute delay. This is the story of how it happened.
Bulbs used for headlamps, turn signals and brake lamps may be required to comply with international and national regulations governing the types of lamps used. Other automotive lighting applications such as auxiliary lamps or interior lighting may not be regulated, but common types are used by many automotive manufacturers.
Blackouts (turning off lights) and brownouts (limiting light emissions by way of hoods and masks) were enforced in cities and coastal areas as protection against the night-time aerial attacks in both Axis and Allied countries. One of the first civilian examples of headlight covers was produced in NSW, Australia by the Read family dairy. [170]
[18] [19] LEDs also produce a whiter light, and can be installed as part of a centrally managed system with further energy saving controls, such as part-night lighting and dimming. [20] Although the up-front costs of installing LED fixtures is significant, municipalities switching to LED street lighting generally expect to recoup their ...