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doit_the_clown doit_the_clown
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7 years ago
If we were to send a laser light pulse toward the Moon and some of this light were to be reflected back toward the Earth from retro-reflectors left there by astronauts, how long after the transmission of the initial flash would the reflected light be detected through a telescope on the Earth?
A)   2.56 microseconds.   C)   1.28 seconds.
B)   2.56 seconds.   D)   1.28 milliseconds.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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hyponoticahyponotica
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7 years ago
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doit_the_clown Author
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7 years ago
Thanks
my2redeyes
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Yesterday
Thanks for your help!!
Ifekwunigwe
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2 hours ago
This helped my grade so much Perfect
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