During the Apollo XI Moon landing a retroreflecting panel

Last updated: 6/15/2023

During the Apollo XI Moon landing a retroreflecting panel was erected on the Moon s surface The speed of light can be found by measuring the time it takes a laser beam to travel from Earth reflect from the panel and return to Earth If this interval is found to be 2 51 s what is the measured speed of light Take the center to center distance from Earth to Moon to be 3 84 x 108 m Assume that the Moon is directly overhead and do not neglect the sizes of the Earth and Moon Assume the radius of the Earth and the Moon are 6380 km and 1740 km respectively m s