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2. List of light sources - Wikipedia

   en.wikipedia.org/wiki/List_of_light_sources

   This is a list of sources of light, the visible part of the electromagnetic spectrum.Light sources produce photons from another energy source, such as heat, chemical reactions, or conversion of mass or a different frequency of electromagnetic energy, and include light bulbs and stars like the Sun. Reflectors (such as the moon, cat's eyes, and mirrors) do not actually produce the light that ...

3. Artificial sunlight - Wikipedia

   en.wikipedia.org/wiki/Artificial_sunlight

   Artificial sunlight is useful in treating and preventing seasonal affective disorder (also known as winter depression, which causes depression symptoms specifically in winter), [3] and delayed sleep phase syndrome, in which the circadian rhythm (the rhythmic alternation between daylight and nighttime behavior and bodily states) is disturbed and the person falls asleep much later than he or she ...

4. Electric light - Wikipedia

   en.wikipedia.org/wiki/Electric_light

   An electric light, lamp, or light bulb is an electrical component that produces light. It is the most common form of artificial lighting . Lamps usually have a base made of ceramic , metal, glass, or plastic which secures the lamp in the socket of a light fixture , which is often called a "lamp" as well.

5. Lighting - Wikipedia

   en.wikipedia.org/wiki/Lighting

   Artificial light at night refers to any light source other than a natural light source. Sources of artificial light include LEDS and fluorescents. This particular light source has effect on the reproduction, immune function, metabolism, thermoregulation and body temperature of organisms that need light for their daily activity.

6. Daylighting (architecture) - Wikipedia

   en.wikipedia.org/wiki/Daylighting_(architecture)

   The reflector had found favor where the choices of artificial light provided poor illumination compared to modern electric lighting. Light shelves are an effective way to enhance the lighting from windows on the equator-facing side of a structure, this effect being obtained by placing a white or reflective metal light shelf outside the window. [19]

7. How to Choose the Right Size, Type, and Color of Christmas ...

   www.aol.com/choose-size-type-color-christmas...

   C9 light bulbs: These lights have a larger bulb size that is shaped like the flame of a candle or similar to a cone. "When people see these bulbs, they think of putting up holiday lights with ...