What limits the speed of light to c and how is it quantized?

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The speed of light is universally limited to the constant value of c, which is approximately 299,792,458 meters per second. This limitation is not due to any special property of light itself but rather stems from the fundamental structure of spacetime as described by Einstein's theory of relativity. The numerical value of c is a result of the units of measurement chosen, rather than an intrinsic characteristic of light. Understanding this concept requires a grasp of the principles of relativity and the nature of constants in physics.

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What causes the speed of light to be limited to c? What is it quantized to? Can someone offer more than it being one of the constants of the universe.
 
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Keithinsingapor said:
What causes the speed of light to be limited to c? What is it quantized to? Can someone offer more than it being one of the constants of the universe.
There is nothing special about the actual value of c. The particular numerical value is due to the chosen units of measurement.

So the question is really why is the speed of light limited and not unlimited.
 

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