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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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Incandescence
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1992-09-02
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574b
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15 lines
Emission of light from a substance in
consequence of its high temperature. The
colour of the emitted light from liquids or
solids depends on their temperature, and for
solids generally the higher the temperature
the whiter the light. Gases may become
incandescent through ionizing radiation, as
in the glowing vacuum discharge tube. The
oxides of cerium and thorium are highly
incandescent and for this reason are used in
gas mantles. The light from an electric
filament lamp is due to the incandescence of
the filament, rendered white-hot when a
current passes through it.