Es gibt etwas, das schneller als Lichtgeschwindigkeit werden kann?
Ich bin gerade auf eine interessante Theorie gekommen. Stellt euch mal vor, ihr haltet ein Lineal in der Hand und bewegt euer Handgelenk, sodass es schwinkt.
Je höher jetzt das Lineal geht, desto schneller schwinkt es ganz oben. Klar, dass es an der Hand kaum Bewegung gibt…
Jetzt nehmen wir mal an, man würde eine Konstruktion mit dem Stärksten Material der Welt bauen. Dazu auf der Erde eine Maschine, die die Energie von 10 Großstädten zugleich aufnehmen und in Form von hin- und her Schwingungen abgeben kann.
Würde man dann nicht ganz weit oben auf Lichtgeschwindigkeit kommen?
*Ich kenne mich in diesem Gebiet so gut wie gar nicht aus.
(4 votes)
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No, the huge ruler from your thought experiment does not move over the entire length absolutely at the same time. The pressure pulse is transmitted from atom to atom, which takes time accordingly. In the case of electrons in a conductor, the pulse is approximately light-fast. Mechanical pressure pulses even spread only at the sound velocity of the material concerned.
Thanks for the star!
Each flashlight can speed up something to speed up light. We don’t need a big machine. There’s already a match.
For everything greater than a photon, more energy needs than there is in the universe.
Nothing that has mass can reach speed of light, but speed of light is not the fastest what there is, the expansion of the universe takes place faster than speed of light.
https://www.ds.mpg.de/2312184/speed of light
To say it quite simply:
Your ruler becomes too heavy to move it even further. At speed of light it has an infinitely high mass.
Real existing materials will not withstand this extreme mechanical stress. But you could take a laser beam and let you rotate. The point on which it strikes could move at overlight speed. In fact, however, no point moves forward.
So, as I would have understood, a light point can already be moved at an overlight speed.
In the end, there is nothing against it because all information transmission as well as the photons themselves always have only speed of light.
Yes, the point has no identity, we only write it to him and marvel at how fast he can flick.
I then misunderstood your answer.
Sound for me as if the light point in the case was not moving, which could not be.
…in which movement can continue only with the corresponding sound velocity, which is always clearly below the speed of light.
No, that wouldn’t work, the acceleration would only be passed on to the end of the rod at a speed of sound. This is not enough to build up speed of light.
No, this is not because the material should have infinite stiffness, which is possible bicht.
However, if you light on the moon surface with a laser pointer and then move it, then the point on the moon surface can actually reach overlight speed. However, this is also in line with all theories, because the spread of the information laser is moving now or is still only at speed of light.
Why so cumbersome?
A rotating rod could be rotated faster and faster in a vacuum.
I expect the centrifugal force to break the rod before reaching the speed of light. But as a play of thought this is permissible.
The question is how to determine the speed of light when the light – based on any point – always has the speed of light? It can never be achieved by this definition.
Nothing can be accelerated to or above speed of light.
Nevertheless, space expansion can increase the distance between galaxies as quickly as possible. [This is why we always see only a very small part of all truly existing stars and galaxies. Most of us move faster than light, so their image does not reach us. )
Nice thought experiment. But it’s not possible.