If 2 lasers (1east 1west) were turned on would the1st photons in each move from each other faster than light?

Question

Say two cars are going opposite directions at ten miles an hour. They are moving apart at twenty miles an hour. So could the same be said of the first photon emitted by each laser? Or are they only moving away from each other at the speed of light?

Answer 1

No. Each photon is still moving at the speed of light. The distance between them is (according to a stationary observer) increasing at twice the speed of light. But neither photon is moving that fast--nor would it appear to be even if you were riding on one of them. This is a rather counter-intuitive prediction of Special Relativity, but then again, how many of us have ever gone lightspeed?

Answer 2

Looking over your other answers . I did work for N.A,S,A, and at one time I was part of the laser team development . With a reflector on a satellite we would fire a 1gig.Watt laser and measure the path time. the path doesn't go around the earth, Goes very straight and we could determine the position of the satellite to an accuracy of 10 cm. over a 12,000 kl. path. Nothing exist in this dimension traveling near the speed of light. the stars moving away from us causing the red shift. give u a better thought that u start accelerating a particle in a cyclotron and as it approaches the speed of light the mass will increase only in the direction of travel. So u could have mass approaching inf. in the shaft of travel. That in a sense is the beginning of a black hole,the only thing with enough power to accelerate to the speed of light is the gravity of a collapsing star.
Good luck

Answer 3

No.

Think about it this way. You're aware that
Speed = Distance / Time
So for the photons travelling away from each other at the speed of light, you take the distance they have moved apart over some time interval, and then divide by that time interval. BUT: just what is this time interval? Moving objects count time at a DIFFERENT RATE than objects at rest (relative to some observer). So the time interval for the photons is larger than it is for the observer who is stationary, and the larger time value results in Speed = c.

Answer 4

There are two assumptions to the theory of relativity. The first is that the speed of light is always the same for any observer regardless of their relative speed. And second is that the laws of physics are the same for all inertial references. The theory has been verified to a high degree of accuracy and so we can assume the assumptions are correct.

The first assumption implies that an observer on one photon would see the other photon moving away from him at the speed light.

Answer 5

They are moving away in relation to each other faster than light but they are still only travelling light speed.

Answer 6

I don't think so. They would probably hit each other on the other side of the Earth (if not affected by Coriolus affect) and cause major damage before we can check out rate.

Answer 7

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Answer 8

yes, they would be moving apart at 372,000 miles per second