# Is the light in a Lorentzclock going slower when you travel with it with 0.9c? [closed]

In a Lorentzclock the light is bounced between the two mirrors with his speed of appr. 300.000km/s. Now when things speed up their time goes slower. But the light is always c, so in the Lorentsclock it also goes with c independent on the speed of the clock. But how is it possible that times slows down, but the light in your Lorentsclock doesn't/can't go slower while every bounce would be a second.

Perhaps this situation could be compared with light in a big gravity. But there the light is making a bigger distance due to curvature of spacetime. So the light still is c but looks going slower because the distance is bigger. Is that also the case with light if you travel with it?

• I am down voting this question, as its not clear. – AMS Jul 15 '16 at 9:59
• Ok, the question is why time could slow down when speeds increase while the light in your Lorentzclock can't slow down while the speed of this ligth gives you the time. So this clock shouldn't go slower as the clock on earth. – Marijn Jul 15 '16 at 10:02
• Is there really nobody who understands my question, or could correct it?! – Marijn Jul 15 '16 at 10:23
• @Marijn: Your question really is extremely unclear. Every observer sees light traveling at the same speed $c$. The observer traveling with the clock sees the light traveling a certain distance. The "stationary" observer sees the light traveling a greater distance. Therefore the "traveling" observer does not conclude the clock has slowed down, but the "stationary" observer does conclude that the clock has slowed down. Does this answer your question? If so, then others have answered it also. If not, then I don't understand what your question is. – WillO Jul 15 '16 at 13:06
• It is true that the traveling observer do not conclude that his clock is slowed down unless he goes back to earth and sees that the clock of the stationary observer is ahead. Now the question is how this possible is as both use a Lorentsclock depending on the speed of light which has in all frames the same speed. – Marijn Jul 15 '16 at 13:11