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universalidea
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What exactly is the relationship between the speed of light and Time? or in other words will Time still exists if an object was to travel faster than light speed?
Thanks :)
Thanks :)
They are different concepts in physics without a direct relation.universalidea said:What exactly is the relationship between the speed of light and Time?
Objects cannot travel faster than the speed of light (at least not within the known laws of physics), so that question does not make sense.universalidea said:or in other words will Time still exists if an object was to travel faster than light speed?
Yes. In other words, based on science.lifeonmercury said:All of these calculations are based on the assumption that nothing in the universe can travel faster than the speed of light (in a vacuum).
Perhaps true. The list of things that may be possible some day is infinite.lifeonmercury said:And this assumption is based our current state of knowledge about our observable universe. Faster-than-light travel may indeed be possible and we haven't discovered it yet.
you are making the common mistake of positing, whether you realize it or not, that there is an inertial frame in which light is motionless. There isn't, so your conclusion is false.Physics-GEEK said:... When one reaches the speed of light (hypothetically), there will be no concept of time.
AGAIN, I point out that your statement is positing, whether or not you intend it to, that there is an inertial frame in which light is stationary and again I say that there is not, so your statement is not meaningful. This is such a common mistake that there is a FAQ on it somewhere here on PF.Physics-GEEK said:@phinds
When I said that there will be no concept of time, I meant that tie would have stopped completely. There would be coefficient of time as time would stop.
It also depends on which inertial frame you are talking about. to an outside observer, he/she will not even see you due to length contraction and to the person inside, he/she will not be able to 'experience' time itself due to a very simple equation :
s = d/t
"We" cannot travel at c and no, when light travels, it is not in an inertial frame. If it were, then it would be in an inertial frame in which light simultaneously is at rest and is also traveling at c. This obvious contradiction is why it is not meaningful to talk about the "point of view" or "frame" or "concept of time" of a photon.Physics-GEEK said:@phinds
So, correct me if I'm wrong, when traveling at c, we are in an inertial frame of reference?
But also, if my conclusion is wrong, then what actually happens to time if a particle reaches the speed of light?
To elaborate on what Phinds is saying:Physics-GEEK said:When one reaches the speed of light (hypothetically), there will be no concept of time.
No particle can ever reach the speed of light. It can only get arbitrarily close to it.Physics-GEEK said:what actually happens to time if a particle reaches the speed of light?
These "websites" you mention pop-sic at best or ignorant blogs at worse. In either case, they are wrong. Asking what would happen hypothetically is exactly asking this: "if the laws of physics did not apply, what would the laws of physics say about <insert nonsense of your choice>".Physics-GEEK said:@DaveC426913
I am still not exactly comprehending this situation. One cannot propose that the speed of light is existing both at c and stationary, understood. So what will really happen at the speed of light. How is it possible to say that one cannot know for sure, because in many websites it is written that if one could hypothetically reach c, their time would stop. So what will really happen (hypothetically)?
Physics-GEEK said:So what will really happen at the speed of light. How is it possible to say that one cannot know for sure, because in many websites it is written that if one could hypothetically reach c, their time would stop. So what will really happen (hypothetically)?
Good. It's not intuitive and you are hardly the only one to have trouble with it at first.Physics-GEEK said:Ok thanks so much guys I actually understood it @DaveC426913 @phinds
The relationship between light speed and time is described by the theory of relativity, which states that the speed of light is constant and cannot be exceeded. As an object approaches the speed of light, time appears to slow down for that object, and as it approaches the speed of light, time appears to stop altogether.
Light speed has a significant impact on time dilation, which is the slowing of time for an object in motion. As an object approaches the speed of light, time dilation becomes more pronounced, and time appears to slow down significantly for that object.
According to the theory of relativity, time appears to stop for an object when it reaches the speed of light. However, this is a theoretical concept and has not been proven in practice.
No, according to the theory of relativity, the speed of light is the ultimate speed limit in the universe. This means that no object can travel faster than the speed of light.
No, the speed of light is a constant in the universe and does not change over time. This is a fundamental principle of the theory of relativity and has been confirmed by numerous experiments and observations.