A(n)________ spectrum is created by a glowing, hot thin gas, such as M-42 in Orion.
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Q76: The Doppler effect causes spectral lines to:
A)narrow.
B)broaden.
C)split.
D)disappear.
E)brighten.
Q77: All Lyman emission lines are transitions from
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Q84: How can Kirchhoff's Laws be used to
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