Ads
related to: dusk to dawn outdoor lighting
Search results
Results from the WOW.Com Content Network
[1] [failed verification] At nautical dawn and nautical dusk, the human eye finds it difficult, if not impossible, to discern traces of illumination near the sunset or sunrise point of the horizon (first light after nautical dawn but before civil dawn and nightfall after civil dusk but before nautical dusk). [citation needed]
(power transistor, thyristor, triac, etc.), which activates the lighting system. Generally, the natural lighting that goes directly to a photoresistor is used, with the effect of a lamp that automatically turns on at dusk and always goes out in the first light of dawn.
Mesopic vision, sometimes also called twilight vision, is a combination of photopic and scotopic vision under low-light (but not necessarily dark) conditions. [1] Mesopic levels range approximately from 0.01 to 3.0 cd/m 2 in luminance.
“It has a sense of mystery and escapism, and feeds into themes of transition — whether it be moving from dark to light, or dusk to dawn — making it perfect for a period of immense change ...
The sky has many colors at this time, such as orange and red. Beyond this point artificial light may be needed to carry out outdoor activities, depending on atmospheric conditions and location. At nautical dusk, the Sun moves to 12° below the horizon in the evening. It marks the end of nautical twilight, which begins at civil dusk.
"Use a timer to automatically turn lights on and off at specific intervals prior to dawn and after dusk," Thewlis says. "A continuous light cycle of 18 hours promotes vigorous vegetative growth ...
Ads
related to: dusk to dawn outdoor lighting