i was thinking of making a stirling engine for a project to explain the carnot cycle and give the applications of the engine and also explain why is it impossible to get a perfect carnot engine
as we know light has momentum so theoretically we can use it but is it practical?
(also this is it that light only exerts force if incident on something?)
but if doesn't change anything how would we know that the speed of light was constant over the time ? and it was changing over the time as the universe was expanding
i have been looking for astrophysics forums all around but this is the first one and i hope that this turns out what i imagined .and I am from India and love to know from where the majority is.