The final bunch line is mind blowing! wow! That is why I love physics.

Yes I have encountered it before, to me the most surprising thing is that how experiment start from laboratory curiosity, like electric and magnetism, end up with Maxwell’s equations and then predicted the speed of light is constant. Then how scientist of the time struggled to stay stick with the common sense and invent the ether for them, instead of just believe the equations. Generally, is shows me how things are connected and the working principle of the universe is independent of our intuitive ideas.

that is because I think that the rotation of the earth is uniform, and can’t change its rotational speed. If the earth suddenly speeds up or slows down we could detect the change. Yes, I think the day and night changes are evidence for it.