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Home Q & A Board Science-Related Homework Help Physics
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symbo symbo
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7 years ago
The radial velocity of a star or other object is measured by
A)   measuring the change in the angular diameter of the object.
B)   watching the object move compared to the background stars.
C)   measuring the intensity of the light in different regions of the blackbody curve.
D)   observing the Doppler shift of spectral lines in the light from the object.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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hyponoticahyponotica
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7 years ago
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symbo Author
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7 years ago
Brilliant ツ
bbbbbbbh
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
africa143
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2 hours ago
Helped a lot
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