Diffraction grating placed in front of a slit of light
from an incandescent bulb gives a rainbow.
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Excitation of hydrogen gas by high voltage electrons
yields light of specific colors when observed through a diffraction
grating.
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Excitation of mercury vapor by high voltage electrons
yields light of specific colors when observed through a diffraction
grating. The same colors are observed to each side of the central
source.
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Excitation of a gas by high voltage electrons yields
light of specific colors when observed through a diffraction
grating. Gases used are (1) hydrogen, (2) helium, (3) mercury,
and (4) nitrogen. N2 exhibits broader lines due to
molecular vibrations and rotations in addition to electronic
transitions.
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Diffraction grating placed in front of excited noble
gases. The grating is oriented so that diffraction occurs vertically.
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Diffraction grating placed in front of excited noble
gases, one gas at a time. The grating is oriented so that diffraction
occurs horizontally.
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Excitation by chemical explosion.
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Excitation by chemical explosion.
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How do you think these colors are produced?
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Some of the colors available from a tricolor LED.
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