# B Light-clock and time dilation [was: Hydrogen atom expressed mathematically]

1. Nov 26, 2017

### erik giles

Actually, in a non-moving experiment, both targets.

2. Nov 26, 2017

### Ibix

OK. Now will it hit or miss that target when the setup is moving?

Note that any other answer than "it hits the same target" implies that an observer inside the rig can detect whether or not the rig is moving without referring to anything outside it. That is, you imply the existence of absolute motion, and deny the principle of relativity.

Last edited: Nov 26, 2017
3. Nov 26, 2017

### Bartolomeo

If you aim your emitter (laser pointer) at right angle in the emitter's frame, this light pulse will always have the same x - velocity as the emitter. In this case the target and the emitter are always at points of closest approach, or right opposite.
If you wish to hit a target which was at point of closest approach at the moment of emission, you must aim your emitter (laser pointer) backward at relativistic aberration angle $\sin \alpha = v/c$
This video in the youtube shows path of light pulse in different frames.

4. Nov 26, 2017

### erik giles

If target one moves perpendicular to the source beginning at T-0 at 0.87C, while target two remains stationary, and both targets are 15 light seconds from the emitter at T-0, what target does it hit at T+15 seconds?

Any answer other than target two implies that we have violated the principle of matter occupying more than one place at the same time.

I am going to write a paper on this and ask you all to peer review it if you don't mind. My point is, the light clock thought experiment is invalid. Relativity is valid.

Thanks!

5. Nov 26, 2017

### Staff: Mentor

Yes, it is. Look up relativistic aberration.

6. Nov 26, 2017

### erik giles

Agreed. Now in this case, the light photon is actually traveling the hypotenuse and will hit the moving target. The observer traveling parallel to it will experience time dilation such that from his view, light remains constant velocity C and gives the appearance of 'straight up' movement within his reference frame.

Therefore the light traveled at the angle and hits target one. Light projected 'straight up' from the vantage point of the emitter, and per this point of view, will deflect and hit target two. Thus the emission angle makes the difference.

7. Nov 26, 2017

### Ibix

We've answered this already. Actually, according to your green observer, the pulse hits nothing at T+15 - it's still in flight (towards target 1). According to an observer on the rig it hits target 1 at that time (they have different notions of what "fifteen seconds later" means).
I've no idea why you think that. The light strikes target 1 and only target 1. I think you need to read up on relativistic aberration, since that explains why target 1 is hit from the perspective of your green observer.
Since what you are describing is inconsistent with relativity, you may wish to review the rules on personal theories before doing so.
Those two sentences contradict one another.

8. Nov 26, 2017

### Staff: Mentor

We don't do peer review here. That's not what PF is for. You would need to submit your paper to an actual scientific journal that does peer review. I doubt any journal would accept it since you have a number of obvious misconceptions, but you could try.

As far as I (or everyone else posting in this thread) can see, your understanding is what is invalid. We've done our best to try to help you, but you are not listening. Therefore, this thread is closed.