You can look them up online. One is known as Airy's failure, the other Michelson-Morley.
The link below is to a geocentrist's (Malcolm Bowden) explanation of Airy's experiment.
The link below is to a geocentrist's (Malcolm Bowden) explanation of Airy's experiment.
In 1728, English physicist James Bradley based his calculations on the change in the apparent position of the stars due Earth's travels around the sun. He put the speed of light at 185,000 miles per second which is now better understood and is a lot lot faster. what that man in the video used was this of what Bradley was doing.
https://en.m.wikipedia.org/wiki/Aberration_(astronomy)