Linked Questions

2
votes
1answer
181 views

Time dilation explained using a light-pulse clock [duplicate]

I found an explanation of time dilation using a light-pulse clock in the book 'Concepts of modern physics' by Arthur Beiser: In this explanation, the clock is moving in a direction perpendicular to ...
0
votes
0answers
41 views

Special relativity with horizontal mirror clock? [duplicate]

Every explanation video about special relativity comes with a constantly moving train and a vertical (according to the train's speed direction) mirror clock. So first of all, why in the classical ...
0
votes
1answer
48 views

Why does time dilation imply length contraction? [duplicate]

This is probably a nonsensical question, but I'm having trouble wrapping my head around it. I'm thinking of the classic scenario where a stationary observer is watching a spaceship move horizontally. ...
42
votes
8answers
4k views

Why is the photon clock equivalent to all clocks?

I can understand why, if the speed of light is invariant, a photon clock would tick slower. I find this explanation very useful in terms of introducing the idea of time dilation (also because it ...
14
votes
4answers
5k views

Help Me Gain an Intuitive Understanding of Lorentz Contraction

I'm having a hard time getting an intuitive understanding of Lorentz Contraction. I understand what it is by definition but I don't 'get it.' I'm not a physicist, just an amateur, so sorry if this ...
10
votes
3answers
510 views

Does special relativity imply that time dilation is affected by an orientation of clocks?

Many texts about STR time dilation use as an example thought experiment with 2 mirror photon clock. The conclusion of this experiment is: In a frame moving relative to the clock, they will appear to ...
0
votes
3answers
259 views

Special relativity clarifiyng time dilation experiment

There is a well known 2 mirror clock time dilation thought experiment in STR. However it is a bit unclear to me due to its unrealistic nature. By unrealistic I mean that experiment implies that ...
2
votes
3answers
138 views

Einstein's light clock [duplicate]

In Einstein's thought experiment involving light moving on a train, the mirrors the light is bouncing between are perpendicular to the train, and it is these mirrors that the formula for time dilation ...
0
votes
2answers
163 views

Time Dilation and Length contraction - thought experiment

Sorry if this is obvious, but I've searched and cannot find this answered. taking a minor change to the light clock experiment on a traveling spaceship. putting the clock in the horizontal position,...
1
vote
2answers
127 views

Time dilation in Einstein's train

Wikipedia states that a clock that is moving relative to [observer] will be measured to tick slower than a clock that is at rest in their frame of reference and they explain it using two pictures: ...
1
vote
0answers
27 views

Query about the Michelson interferometer

Say I am cycling past a Michelson interferometer set up. Someone at rest with the experiment will see both beams travelling a distance $L_0$ and hence conclude that $T_{AB}=T_{AC}=\frac{2L_0}{c}$. ...
0
votes
0answers
27 views

Law of cosines in Time dilation formula derivation [duplicate]

In my book, Bob takes off on a spaceship with a light clock so that the direction of motion of his spaceship is perpendicular to the direction of motion of light in the light clock. As a result, ...