Time dilation and length contraction

In summary, the link between the effects of length contraction and time dilation in special relativity is that they are both permutations of an interval from different reference frames. The Lorentz Transformation is used to link them together mathematically. Drawing a spacetime diagram and studying muon lifetime measurements can help understand the symmetry between the two phenomena. Both length contraction and time dilation are related to the invariance of speed in special relativity.
  • #1
AdamBenHamo
13
0
I've recently been thinking more about special relativity, and while I understand the Lorentz factor and how to apply it to find correct solutions, I'm still stuck on the link between the effects of length contraction and time dilation, are they permutation of the same thing from different reference frames? How do they link together mathematically? Any light shed on this at all would be really helpful! Thanks in advance!

AdamBenHamo
 
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  • #2
AdamBenHamo said:
I've recently been thinking more about special relativity, and while I understand the Lorentz factor and how to apply it to find correct solutions, I'm still stuck on the link between the effects of length contraction and time dilation, are they permutation of the same thing from different reference frames? How do they link together mathematically? Any light shed on this at all would be really helpful! Thanks in advance!

AdamBenHamo
It's not just the Lorentz factor that you need to use to find correct solutions, it's the Lorentz Transformation that will link them together mathematically.
 
  • #3
Thankyou ghwellsjr, but that doesn't quite answer my question, it's no so much the solutions that I have a problem finding, but the symmetry between the two phenomena that I can't quite get my head around!
 
  • #4
Drawing a spacetime diagram helps a lot. Have you done that or have you studied the threads where I have done it?
 
  • #5
AdamBenHamo said:
Thankyou ghwellsjr, but that doesn't quite answer my question, it's no so much the solutions that I have a problem finding, but the symmetry between the two phenomena that I can't quite get my head around!

The muon lifetime measurements are a good way of seeing the relationship. You could try #27 in this fairly recent thread: https://www.physicsforums.com/showthread.php?t=679937
 
  • #6
AdamBenHamo said:
...on the link between the effects of length contraction and time dilation, are they permutation of the same thing from different reference frames? How do they link together mathematically?

I'd agree they are permutations of an interval.


length / time = speed

speed is limited, the limited speed is invariant. Lower speeds are not invariant.
 

1. What is time dilation?

Time dilation is a phenomenon where time appears to pass slower for objects that are moving at high speeds or in strong gravitational fields. This is due to the stretching of time and space as described by Albert Einstein's theory of relativity.

2. How does time dilation occur?

Time dilation occurs because the speed of light is constant in all frames of reference. This means that as an object moves faster, its perception of time slows down in order to maintain the speed of light as a constant. Additionally, the effects of gravity can also cause time to pass slower in stronger gravitational fields.

3. What is length contraction?

Length contraction is a consequence of the theory of relativity that states that objects in motion will appear shorter in the direction of their motion when observed from a stationary point of view. This effect only becomes noticeable at extremely high speeds, close to the speed of light.

4. How is length contraction related to time dilation?

Length contraction and time dilation are both effects of the same underlying principle, which is the constancy of the speed of light. As an object's perception of time slows down, it also experiences a contraction in its length in the direction of its motion. These two phenomena are interconnected and are both consequences of Einstein's theory of relativity.

5. Can time dilation and length contraction be observed in everyday life?

Yes, time dilation and length contraction can be observed in everyday life, although the effects are very small and only become noticeable at extremely high speeds or in strong gravitational fields. For example, the Global Positioning System (GPS) has to account for the effects of both time dilation and length contraction in order to provide accurate location data. Additionally, particle accelerators and experiments involving atomic clocks have also provided evidence for these phenomena.

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