I would like to know how long does information takes to
arrive to the earth from the moon.
I mean if I talk with a transmisor from the moon how many time after i
talked, the voice arrive to the earth.... voice or video.
Just take the distance to the moon (which I think off the top of my head is
250,000 miles) please verify these numbers yourself! And the speed of light
(lets use 189,000 miles/second) so then all you need to do is divide the
distance by the speed, or:
(250,000 miles)/(189,000 miles/second) = 1.32 seconds for a one way trip
(approximately-check speed of light and distance to the moon!)
This does not matter if it is a voice or video, they both travel at the same
Electromagnetic waves carrying information (data, voice, etc.) travel at
the speed of light. If I remember my numbers correctly, it takes light
just over a second to travel from the moon to the earth.
Dr. Ali Khounsary
Advanced Photon Source
Argonne National Laboratory
Argonne, IL 60439
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Update: June 2012