I had a radiometer when i was a kid ... is that momentum what makes it spin, because i thought the light was heating the black surfaces more than the white surfaces, so the air molecules bounced more vigorously away from the black.
i didn't think about photons having momentum when i was 8, though.
i didn't think about photons having momentum when i was 8, though.
https://a.co/d/00nIWNpB