Minimum Time Delay for Communicating with Astronaut on Moon: 2.5s

Thread starter ZedCar
Start date Dec 23, 2011
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Measurement Time

AI Thread Summary

The minimum time delay for communication with an astronaut on the moon is calculated to be 2.5 seconds due to the distance of approximately 3.8 x 10^8 meters from Earth. This delay accounts for the time it takes for a signal to travel to the moon and back, using the speed of light as the constant. The calculation involves dividing the distance by the speed of light and multiplying by two for the round trip. The formula used is indeed (3.8 x 10^8) / c x 2. This confirms that the time delay is primarily determined by the vast distance between Earth and the moon.

Dec 23, 2011

ZedCar

In communicating with an astronaut on the moon, 3.8x10^8 m from earth, what is the minimum time delay in getting a response to a question?

The answer in the book is given as 2.5 seconds.Have they simply used;

( (3.8x10^8) / c ) x 2

Last edited: Dec 23, 2011

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Dec 23, 2011

The1337gamer

Yes, i assume they have used ( (3.8x10^8) / c ) x 2 to get the distance from Earth to Moon and then back, then they have divided by speed of light.

Dec 23, 2011

ZedCar

Thank you

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