Part of the definition of an Inertial Reference Frame (IRF) is that light travels at c so how can you transform an IRF to v=c? If you try to do it, you will see that you have to divide by zero which isn't allowed. So there is no such thing as an IRF where time stands still. There's no such thing as time dilation being infinite. There's no such thing as light taking a longer time (traveling slower than c, if that's what you mean).jmonlive said:How can speed of light be absolute yet that fact and relativity of sublight speed implies relativity of space and time intervals; if time time dilation is infinite at v=c, then time stands still only from that reference frame, but light takes a longer time relative to any other reference frame (thought it isn't at rest relative to our reference like any sublight speeds-to-rest reference-frame transform)?
jmonlive said:How can speed of light be absolute yet that fact and relativity of sublight speed implies relativity of space and time intervals; if time time dilation is infinite at v=c, then time stands still only from that reference frame, but light takes a longer time relative to any other reference frame (thought it isn't at rest relative to our reference like any sublight speeds-to-rest reference-frame transform)?
Time dilation is the phenomenon in which time appears to pass slower for an object in motion compared to an object at rest. This is a consequence of Einstein's theory of relativity and is observed at high speeds or in strong gravitational fields.
The speed of light is a fundamental constant in physics, denoted by 'c'. It is the maximum speed at which all matter and information can travel in the universe. This speed is important for time dilation because according to Einstein's theory, as an object approaches the speed of light, time dilation becomes more significant, and at the speed of light, time stands still.
Time dilation can affect the aging process by slowing down time for an object in motion. This means that an object moving at high speeds will experience less time passing compared to an object at rest. This has been observed in experiments with high-speed particles and is also a factor in space travel, where astronauts age slightly slower due to their high speeds.
According to the theory of relativity, time stands still at the speed of light. However, this is only from the perspective of an outside observer. For the object moving at the speed of light, time would still appear to pass normally. This is because time dilation is relative to the observer's frame of reference.
The practical implications of time dilation at the speed of light are significant, especially in the field of space travel. As objects approach the speed of light, time dilation becomes more pronounced, making it difficult for astronauts to experience the same amount of time as those on Earth. This can also affect the accuracy of GPS systems, as they rely on precise timing to function properly.