light: Definition, Synonyms from Answers.com
light n. Physics . Electromagnetic radiation that has a wavelength in the range
from about 4000 (violet) to about 7700 (red) angstroms and may be.
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light-year: Definition from Answers.com
light-year also light year ( ) n. The distance that light travels in a vacuum in one
year, approximately 9.46 trillion (9.46 × 10) kilometers or 5.88.
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light bulb: Definition from Answers.com
light bulb n. An electric light in which a filament is heated to incandescence by an
electric.
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Speed of light: Definition from Answers.com
speed of light ( ′spēd əv ′līt ) ( electromagnetism ) The speed of propagation of
electromagnetic waves in a vacuum, which is a physical constant.
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What is the speed of light
Where v is the speed of light through the medium, c is the speed of light in a
vacuum and n is the refractive index of the medium. For example: The refractive ...
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How does a light bulb work
An incandescent light-bulb takes just enough electric current to make a piece of
metal glow brightly enough to give out visible light yet not get so hot that it melts ...
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What is ultraviolet light
Ultraviolet light (UV light) is light of shorter wavelength than the visible spectrum.
Many insects, like bees, see mostly UV light so they can find plants with nectar.
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light-emitting diode: Definition from Answers.com
Most commercial light-emitting diodes (LEDs), both visible and infrared, are
fabricated from III–V semiconductors. These compounds contain elements such
as ...
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ultraviolet: Definition from Answers.com
Although ultraviolet (UV) light is widely known as a disinfectant, it is also used to
erase EPROM chips. After several minutes of exposure to UV light, the chip can ...
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