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  2. Emergency light - Wikipedia

    en.wikipedia.org/wiki/Emergency_light

    Most individual light sources can be rotated and aimed for where light is needed most in an emergency, such as toward fire exits. Modern fixtures usually have a test button of some sort which simulates a power failure and causes the unit to switch on the lights and operate from battery power, even if the main power is still on.

  3. Dust storm warning - Wikipedia

    en.wikipedia.org/wiki/Dust_storm_warning

    If caught in one, pull off the road, turn off your lights and keep your foot off the brake. Motorists should not drive into a dust storm. PULL ASIDE STAY ALIVE ...

  4. Flood warning - Wikipedia

    en.wikipedia.org/wiki/Flood_warning

    A flood warning is closely linked to the task of flood forecasting.The distinction between the two is that the outcome of flood forecasting is a set of forecast time-profiles of channel flows or river levels at various locations, while "flood warning" is the task of making use of these forecasts to make decisions about whether warnings of floods should be issued to the general public or ...

  5. Flash flood warning - Wikipedia

    en.wikipedia.org/wiki/Flash_flood_warning

    One is a flash flood watch, which means that conditions are favorable for flash flooding, and the other is a flash flood warning, meaning that a flash flood is occurring or one will occur imminently and is usually issued when there are strong weather radar echoes for an area that is prone to flash flooding. [2]

  6. Light pollution - Wikipedia

    en.wikipedia.org/wiki/Light_pollution

    Turning lights off using a timer or occupancy sensor or manually when not needed. For example, wind turbines have blinking lights that warn aircraft, to prevent collisions. [ 153 ] Residents living near windfarms, especially those in rural areas, have complained that the blinking lights are a bothersome form of light pollution. [ 153 ]

  7. Security lighting - Wikipedia

    en.wikipedia.org/wiki/Security_lighting

    Security lighting to prevent intrusions may be counter-productive. Turning off lights halved the number of thefts and burglary in Övertorneå Sweden. [2] [3] A test in West Sussex UK showed that adding all-night lighting in some areas made people there feel safer, although crime rates increased 55% in those areas compared to control areas and to the county as a whole.

  8. 30 Fascinating Historical Photos That Offer A New Perspective ...

    www.aol.com/history-cool-kids-91-interesting...

    Image credits: historycoolkids The History Cool Kids Instagram account has amassed an impressive 1.5 million followers since its creation in 2016. But the page’s success will come as no surprise ...

  9. Floodlight - Wikipedia

    en.wikipedia.org/wiki/Floodlight

    Floodlights Association football field at a sports center illuminated with floodlights.. A floodlight is a broad-beamed, high-intensity artificial light.It can provide functional area lighting [1] for travel-ways, parking, entrances, work areas, and sporting venues to enable visibility adequate for safe task performance, ornamental lighting for advertising, façades, monuments, or support ...