Apollo astronauts who stepped on the moon have kept some large mirrors there. Collect information about how the distance to the moon is measured using these.
Apollo astronauts who stepped on moon placed the large reflectors on the moon surface. For measuring the distance the light from Lasers is thrown at the reflectors placed on the moon, and the time taken for the reflected light to return is calculated. After that, the distance of the moon is calculated from the formula
The figure below shows the experimental setup for measuring the distance.
This whole process of measuring the distance is called as the “Laser Ranging Experiment”.
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