No matter how close or how far Galileo was from his assistant, he always measured roughly the same time in performing the lantern experiment. Just what time was Galileo measuring?
A) the time for light to travel from his assistant to himself
B) the round-trip time for light to travel between Galileo and his assistant
C) his own reaction time-that is, the time for him to open his shutter after observing his assistant's light
D) the combined reaction time of Galileo and his assistant
Correct Answer:
Verified
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