- #1
n0sferatu
- 4
- 0
Hi!
Consider a high-speed camera set up to record an explosion and the resulting shockwave emanating from the explosion. In the same frame you can see the shock wave as well as people in the distance. Is it true that the people in the distance wouldn't hear the sound of the explosion until the visible wave in the video hits their eardrums? That is, is the pressure wave that emanates from the explosion and that is captured in the video the same as the sound waves that the person hears?
Next, consider the same setup except using a flash light that is aimed at a person's eyes. Could there ever be a camera developed that can record frames faster than the speed that light travels? If so, could you then play back the video and actually see the beam of light traveling in slow-motion through space towards the persons eyes? Also, if you stopped at a frame in the middle of the footage (with the light beam 1/2 way from the source to the persons eyes), would the person not realize that the flash light was on at that exact moment because the photons of the light beam hadn't hit their retinas yet?
Just curious! Thanks!
Consider a high-speed camera set up to record an explosion and the resulting shockwave emanating from the explosion. In the same frame you can see the shock wave as well as people in the distance. Is it true that the people in the distance wouldn't hear the sound of the explosion until the visible wave in the video hits their eardrums? That is, is the pressure wave that emanates from the explosion and that is captured in the video the same as the sound waves that the person hears?
Next, consider the same setup except using a flash light that is aimed at a person's eyes. Could there ever be a camera developed that can record frames faster than the speed that light travels? If so, could you then play back the video and actually see the beam of light traveling in slow-motion through space towards the persons eyes? Also, if you stopped at a frame in the middle of the footage (with the light beam 1/2 way from the source to the persons eyes), would the person not realize that the flash light was on at that exact moment because the photons of the light beam hadn't hit their retinas yet?
Just curious! Thanks!