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thallium81 thallium81
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A month ago

Which of the following describes the magnitude scale?



It originated just after the telescope was invented.



It can be used to indicate the apparent brightness of a star.



It is no longer used today.



It was used to determine the rate of precession.

Textbook 
ASTRO

ASTRO


Edition: 3rd
Authors:
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angelofavariceangelofavarice
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thallium81 Author
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A month ago
this is exactly what I needed
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Thanks
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Smart ... Thanks!
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