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physicsguy13
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I know the textbooks say light travels 186,282.4 mps, but if time slows for a very fast object, how do scientists really know the speed of a photon?
physicsguy13 said:Please explain this to me Drakkith. I'm only 12 years old.
physicsguy13 said:Is it because time dillation only affects objects with mass, and photons do not?
phinds said:No, you misunderstand time dilation. Time dilation is an artifact of remote measurement.
YOU, for example, right now, this very minute as you read this, are traveling at .9999c from some frame of reference, and observation from that frame of reference shows you to be seriously time dilated. Do you feel any different, knowing that? You shouldn't, since you are NOT time dilated from your own frame of reference.
physicsguy13 said:I require more clarification. If I am not actually moving at 99% of c, is it because the frame of reference is moving at 99% of c? If so, would the frame of reference would see me as moving slower than c?
physicsguy13 said:I require more clarification. If I am not actually moving at 99% of c, is it because the frame of reference is moving at 99% of c? If so, would the frame of reference would see me as moving slower than c?
physicsguy13 said:I know the textbooks say light travels 186,282.4 mps, but if time slows for a very fast object, how do scientists really know the speed of a photon?
physicsguy13 said:If light is not affected by time dilation, are there any "light clocks" to measure time exactly without the effects of time dilation? Or am I still getting the concept wrong?
physicsguy13 said:If light is not affected by time dilation, are there any "light clocks" to measure time exactly without the effects of time dilation? Or am I still getting the concept wrong?
physicsguy13 said:If light is not affected by time dilation, are there any "light clocks" to measure time [strike]exactly[/strike] without the effects of time dilation?
physicsguy13 said:Also, I changed my mind. I will only post questions.
physicsguy13 said:I know the textbooks say light travels 186,282.4 mps, but if time slows for a very fast object, how do scientists really know the speed of a photon?
phinds said:I think you are still getting the concept wrong. I say again, time dilation is an artifact of remote observation. You in your own reference frame cannot measure any time dilation on you because there IS none, and you cannot help but measure time dilation in a different reference frame that is moving at relativistic speeds relative to you.
You can COMPUTE the "local" time scale of a different reference frame that you see as time dilated, if you know its velocity relative to you.
nitsuj said:Can you expand on that? Not sure it what sense you mean it is an "artifact of remote observation".
It sounds like you are saying it's an illusion of sorts, or has no physical meanings / consequence.
nitsuj said:Can you expand on that? Not sure it what sense you mean it is an "artifact of remote observation".
It sounds like you are saying it's an illusion of sorts, or has no physical meanings / consequence.
Scientists use a variety of methods to measure the speed of light. One common method is to use a laser and a rotating mirror to measure the time it takes for the light to travel back and forth between the two objects. Another method is to use the phenomenon of interference to measure the speed of light.
The speed of light is an important constant in many scientific equations and theories. By accurately measuring the speed of light, scientists can validate these theories and make new discoveries about the nature of light and the universe.
The measurements of the speed of light are extremely accurate, with the current accepted value being 299,792,458 meters per second. Scientists continue to improve upon their methods and technology to make even more precise measurements.
According to the theory of relativity, the speed of light is a constant and has always been the same. However, there are some theories that suggest the speed of light may have been different in the early stages of the universe.
The speed of light is incredibly fast, and it is the fastest known speed in the universe. It is over 670 million miles per hour, which is about 874,030 times faster than the speed of sound. It is so fast that it would take light only about 1.3 seconds to travel from the Earth to the Moon!