Judge Original Time & Length Special Relativity

[Barry Z]

TL;DR Summary

How to Judge original time and original length of special relativity

How to Judge original time and original length of special relativity

 

[Barry Z]

How to explain twin paradox without using mathematical methods？

 

[Dale]

How to explain twin paradox without using mathematical methods？

There are some fairly non mathematical treatments here:

https://math.ucr.edu/home/baez/physics/Relativity/SR/TwinParadox/twin_paradox.html

But if these are still too mathematical for you then I think you will need to adjust your expectations

 

[anuttarasammyak]

Summary:: How to Judge original time and original length of special relativity

How to Judge original time and original length of special relativity

Set an IFR first. Proper time for the IFR is measured by clocks at rest. Measures at rest show proper length.

 

[anuttarasammyak]

How to explain twin paradox without using mathematical methods？

One twin stays in an IFR where time to meet brother again ages more. Another twin transfers IFRs, once at least, that makes his time to meet brother again ages less.

 

[martinbn]

How to explain twin paradox without using mathematical methods？

What do you mean by mathematical methods? Is high school maths ok or do you want absolutely no maths at all?

 

[Ibix]

In relativity, it turns out that the elapsed time measured by your clock is a measure of "distance" traveled through spacetime. Just like with distance between points in space, the "distance" between two events in spacetime depends on the route taken. The twins took different routes between the departure and return events, so have different elapsed times.

I don't think any of that is provable without maths, but it's the correct explanation.

 

[vanhees71]

It is impossible to talk in a meaningful way about physics without a minimum of math. For the here discussed kinematical effects of the relativistic spacetime model you only need basic linear algebra.

 

[PeterDonis]

Moderator's note: A more advanced discussion about metrics and mathematical structures has been moved to a separate "A" level thread:

https://www.physicsforums.com/threads/space-spacetime-metrics-and-mathematical-structures.1010756/