| Nightlight |
Articles about Nightlight |
Information AboutNightlight |
|
A nightlight is a small, usually electrical, Light source placed for comfort or convenience in indoor dark areas or areas that become dark at certain times. USE AND CULTURE Children often use night lights for the sense of security they provide them. Besides their usefulness to children in the allaying of their fears, night lights are also useful to the general public for allowing sight of the general lay of a room without turning on a major light, for avoiding tripping on a case of stairs, or to mark an Emergency Exit ; the exit signs often use Tritium in the form of a Traser . There are a wide variety of nightlights. Most based on Incandescent Bulb s have a power usage of less than 10 Watt s; lights based on more efficient technologies, e.g. Neon Lamp s and LED s, use 1 watt or less. They sometimes have a light-sensitive switch which activates them only when it is dark enough for them to be required. NEARSIGHTEDNESS At least one study {Link without Title} , at the , however, contradicted the earlier conclusion. Both studies were published in the journal '' Nature ''. |
|
|