The optical path length of a vacuum-spaced Fabry-Perot interferometer

[@mgpetert]

Great presentation! Thank you for showing the simulation results. Much easier to understand the discussion by seeing pictures

[@GoatzAreEpic]

I was making the exact same mistake as the viewer haha. I even asked chat gpt and it told me that it should indeed be 2d/cos(theta). However I was sceptical and luckily found your explanation. Thank you sir!

[@amribrahim7850]

Thank you

[@Dalvir-e6d]

Thank you

[@svitloorsvetlo]

Thanks you!!!

[@ColinByrnes]

wonderful