It’s not just about “light”. Light is just a tiny fraction of the electromagnetic (EM) spectrum that we can see. This includes radio waves all the way up to X-rays and gamma rays.
The speed of light( “C” for short) is actually the speed of *Causality*. The speed of cause and effect.
If something does not have mass (and is not currently interacting with something) it moves *at* C. That’s not just the maximum speed that it can travel that is the speed that it *does* travel.
Why/How?
The “how” is described by insanely complex mathematics.
I think the why has to do with the “Anthropic Principle”. Without a maximum speed limit, the history of the universe would go from start to finish instantaneously. Nothing can be observed in the universe if we don’t have time to observe it.
On the other hand, if we could build a ship that traveled at light speed. Then once that ship moved at light speed the trip would be instantaneous from the passengers point of view. Which brings up the question. Since everything in the universe moves, how much time dilation are we currently experiencing as opposed to sitting still in relation to the rest of the universe?
On the other hand, if we could build a ship that traveled at light speed. Then once that ship moved at light speed the trip would be instantaneous from the passengers point of view. Which brings up the question. Since everything in the universe moves, how much time dilation are we currently experiencing as opposed to sitting still in relation to the rest of the universe?
It’s not just about “light”. Light is just a tiny fraction of the electromagnetic (EM) spectrum that we can see. This includes radio waves all the way up to X-rays and gamma rays.
The speed of light( “C” for short) is actually the speed of *Causality*. The speed of cause and effect.
If something does not have mass (and is not currently interacting with something) it moves *at* C. That’s not just the maximum speed that it can travel that is the speed that it *does* travel.
Why/How?
The “how” is described by insanely complex mathematics.
I think the why has to do with the “Anthropic Principle”. Without a maximum speed limit, the history of the universe would go from start to finish instantaneously. Nothing can be observed in the universe if we don’t have time to observe it.
With our current understanding of the universe, everything is constantly moving at the speed of light in the four-dimensional space-time. This is why, if something is moving fast, it starts to experience time differently – it trades some of the movement in the direction of time to move in space. When an object travels at the speed of light – time stops. If you traveled at the speed of light to another planet you would just teleport there from your perspective (no time will pass), even if others would see you traveling at light speed.
With our current understanding of the universe, everything is constantly moving at the speed of light in the four-dimensional space-time. This is why, if something is moving fast, it starts to experience time differently – it trades some of the movement in the direction of time to move in space. When an object travels at the speed of light – time stops. If you traveled at the speed of light to another planet you would just teleport there from your perspective (no time will pass), even if others would see you traveling at light speed.
With our current understanding of the universe, everything is constantly moving at the speed of light in the four-dimensional space-time. This is why, if something is moving fast, it starts to experience time differently – it trades some of the movement in the direction of time to move in space. When an object travels at the speed of light – time stops. If you traveled at the speed of light to another planet you would just teleport there from your perspective (no time will pass), even if others would see you traveling at light speed.
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