refer to the video below.
the solution is simple: to measure the speed of light on both directions use the spinning wheel with holes in it and a stroboscope. first place the wheel before the light reaches the mirror and then place it after the light bounces back from the mirror, then compare the results. you can use several mirrors and place the wheel in different locations to measure if there is any difference in the speed of light depending on the location of the spinning wheel.
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