Bright lines in an emission spectrum represent:
A) regions from which light travels more rapidly and reaches us more quickly
B) flaws in the telescopes and spectroscopes that astronomers use to measure spectra
C) photons absorbed when an electron jumps from a lower to a higher energy level
D) particular energies of light that are emitted from a distant object
E) photons absorbed when an electron jumps from a higher to a lower energy
Ans: D) particular energies of light that are emitted from a distant object
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The source of electrons in an ordinary electric circuit is
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