if photons have the same speed in all reference frames according to GR, why do slomo films of light beams exist?
In: Physics
Simple it’s a frames per second probably called FPS. Most things were set at 30 frames a second that means 30 pictures in that second. But we have cameras that now can do several thousand in a second.
So how slow motion film works is the normal 30 FPS, or 30 pictures a second. Instead you take 300 pictures or frames in that second and they’re replaying them at 30 frames per second the video will be 10% slower. 3000 frames, 100 times slower.
Just a quick search shows that there are cameras that they use to take pictures of photons that operate at a trillion frames a second. When played back at 30 frames a second it would be 33 billion times slower.
In short we can take pictures one at a time at a very high rate per second. We then play that back at a slower rate per second.
Latest Answers