Linked Questions

1
vote
4answers
130 views

How do we determine who is the “observer” when calculating time dilation? [duplicate]

I was reading about time dilation and I thought of a question. I really think that I am just misunderstanding something, so please bare with the question. But, I would appreciate if somebody could ...
2
votes
1answer
180 views

Time dilation under different references paradox [duplicate]

I couldn't figure this out... I understand that if Alice is moving relatively to Bob at a high speed, Alice's time elapses slower than Bob's. So when Alice is back to Bob and compares the clock, ...
-7
votes
3answers
222 views

Why does everyone seem to think that moving clock appear to tick slower? [duplicate]

I'm getting interested in special relativity and almost all people and explanations about the subject I found on the internet seem to think that when A and B would be in relative motion, they would ...
-1
votes
1answer
326 views

Time dilation cancelling out due to relative motion [duplicate]

Suppose I am travelling at a speed near to the speed of light and I have a clock with me . For a stationary observer having the same clock, he would see that my clock ticks slower than his. On the ...
-1
votes
3answers
126 views

Time dilation when observed from each frame [duplicate]

I have just begun with special relativity so pardon me if my question seems too obvious. In the books I am following, there is an example of time dilation which says: The half life of muons is $\...
-1
votes
1answer
117 views

A question on twin paradox [duplicate]

Let there be two children Allen and George . now Alan boards a train and the train moves at a speed comparable to light. now because George is on the station for George being at rest Allen is moving ...
0
votes
2answers
49 views

Does time dialation cancellation occur between two observers moving in opposite directions [duplicate]

This is the question that has been on my mind lately: If an object A is moving away from an object B which is presumed stationary by A, then the time observed from the perspective of object B will ...
1
vote
1answer
46 views

Which clock will dilate when one is moving towards the other [duplicate]

Suppose two children are standing 100m apart one of them starts running towards the other with relativistic speed...which clock would be slower? Note- I thought this was similar to the twins paradox ...
0
votes
0answers
30 views

Special relativity time dilation - what will the outcome be? [duplicate]

if observer 1 sees observer 2 moving toward him at near the speed of light, observer 1 will say that his clock runs faster then observer's 2 clock, but observer 2 will see observer 1 toward him at ...
0
votes
0answers
24 views

In special relativity, how can time dilation happen from both point of view? [duplicate]

Say I have the following setup. Person A is stationary. Person B is to the very far right of person A and is travelling towards person A in a plane at very high speed but sufficiently far away so ...
-1
votes
0answers
19 views

Paradox about relativity of velocity in relation to time dilation [duplicate]

I am aware that this a not a very exact question, but I have just started studying Relativity Theory, and there is something that is bugging me conceptually about Time Dilation: Say I am travelling ...
0
votes
0answers
14 views

Which frame to consider for time dilation? [duplicate]

Clearly for constant motion we cannot define absolute rest or motion. So ,when dealing with time dilation problems for example twin paradox , how do we define which frame is in motion? If we ...
84
votes
11answers
10k views

What is the proper way to explain the twin paradox?

The paradox in the twin paradox is that the situation appears symmetrical so each twin should think the other has aged less, which is of course impossible. There are a thousand explanations out there ...
6
votes
6answers
8k views

If clocks themselves are based on light signals, wouldn't we expect the measured speed of light to always be the same constant?

I'm trying to work out if there is an alternative starting point for the second postulate of special relativity. My main observation is that all "clocks" are, internally, based on light signals. So ...
0
votes
2answers
113 views

How are the time dilation and the relativistic Doppler shift added together in what observers “see”?

I'm using the illustration from this question: Suppose A and B are d light years away, and at rest. Then they symmetrically start to travel toward each other (symmetric acceleration process in ...

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