Multiple Choice
The Planck time is
A) the time it takes for light to travel across-- or around-- the entire universe.
B) the time when the cosmic background radiation originated.
C) the time it takes for an electron in an unexcited hydrogen atom to orbit the nucleus one time.
D) the time required for pair creation.
E) the shortest time that has any physical meaning.
Correct Answer:
Verified
Correct Answer:
Verified
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