Date: Around 1993
Please send any information about neon and other lighting systems.
Light is emitted either by atoms emitting energy as the atom
changes energy states or by random thermal motions. Neon or light emitted
from chambers of gas that are excited by currents (fluorescent lights also)
give off light at specific frequencies, while incandescent lamps give off a
broad spectrum of light that is determined by the temperature of the material
itself. More details can be found in various encyclopedias, especially the
Encyclopedia of Chemical Technology.
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Update: June 2012