Speed of light; does a laserpointer break the speed of light?
First of all, the only real speed is the one of the laserpointer – 1 rps (revlution per second). The light, in described case, travels in many ways: from the pointer to the wall, from the wall to the watcher’s eye and around the room. Since it travels so many distances, it may appear reasonable to assume that it travels at the speed of light, or even faster. BUT, closing to the speed of light over the wall, You will notice the DELAY, i.e. the discontinuity between the laser beam at it’s source and it’s reflection on the wall. Since there would be almost 48000 km from the source to the “wall”, the delay is inevitable and it would look like the point is slowing down, instead of reaching the speed of light. Due to the “laziness” of the eye, only a line could be seen on the wall. That’s because, at such a distance, a point would strech to a line, which has bigger length, which would cause the effect of delay. By use of vector analysis, it can be seen that the time delay produces lower spee
