All Questions
Tagged with relative-motion special-relativity
148
questions
2
votes
2
answers
523
views
Why can't we take space as universal frame of reference?
Suppose we have a ball filled half with water in space with nothing else around (nothing else in the whole space except the ball) and suddenly it accelerates for time t. obviously, there would be ...
0
votes
2
answers
71
views
Meaning of the term speed of light in context of an object of non-zero mass
We know from GR that an object of non-zero mass cannot propagate at light. I have a problem with the term speed of light. Does it mean the relative speed of that object with another object or frame of ...
- 37
2
votes
3
answers
186
views
Why cannot we determine our own velocity?
I know it would violate the principle of relativity. But have there been serious experimental attempts to contradict that principle?
If I am in a moving train without windows and totally sound proof,...
- 951
1
vote
1
answer
125
views
Interpretation of directional depenedence in special relativity
I am reading AP French's book, Special Relativity, because I have always wanted to understand the subject, and I have just attempted to answer the following question (1-22) in the book:
An electron ...
0
votes
1
answer
69
views
Speed of light as the maximum speed and movement course
Assuming we have 3 objects d,e,f moving on the same line while e is stationary, d is moving to the left at 'almost speed of light' and f is moving to the right at 'almost speed of light'. What is the ...
- 143
0
votes
1
answer
69
views
Time in Lorentz transformations
I have a question about the meaning of time in Lorentz transformations.
When we say that event A for S' occurs at t', I understand that this ct' is a distance, but I wonder exactly what does it ...
- 181
-1
votes
2
answers
61
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Relativity: moving space shuttles [closed]
Two space shuttles $A$ and $B$ are moving in opposite directions. A person on Earth measures $v_A = 0,75 c$ and $v_B = -0,85 c$. What is the velocity of $B$ relative to $A$ (= $v_{BA}$)?
So my first ...
- 265
1
vote
1
answer
100
views
Signs in relative vector addition
So I know the formula for relative vector addition is
$$w = \frac{v-u}{1-\frac{uv}{c^2}}.$$
How do I chose when to use this formula or its inverse transformation for solving vector addition problems ...
- 33
0
votes
1
answer
40
views
Charged particle and magnet, can this event vary relatively?
suppose we take a charged particle and a magnet and place them at some particular distance apart .Now let's take 2 frame of reference.
[the charged particle and the magnet are in rest with respect ...
- 289
0
votes
0
answers
80
views
Why does a charged particle experience lorentz force while moving in a uniform magnetic field?
Firstly, when a charged particle moves in an infinite uniform linear magnetic field, it experiences a force.But,how does the charge or how do we differentiate that the relative position of charge is ...
- 21
1
vote
3
answers
722
views
Speed vs Velocity of light in Light clock thought experiment
A related question has been asked multiple times (like here, here and here). But none of those answers are clearing my doubt. In fact they're furthering my confusion. My specific doubt is regarding ...
- 427
-1
votes
2
answers
218
views
Can two electron moving in opposite direction move faster than light? [duplicate]
Suppose we are moving two electrons in opposite direction both having a speed of 1.6e8 meter per sec.When they will cross each other then their relative velocity will be 3.2e8 ms_1.Isn't it faster ...
-2
votes
1
answer
121
views
Super luminal speed paradox? [duplicate]
Chosing a reference frame in which the Earth is at rest and doesn't rotate is related, but different. Here I'm asking if there is a paradox and if my attempt at resolution has merit, and if not ...
- 2,728
1
vote
1
answer
108
views
Correlation between velocity and homogeneity of spacetime and isotropy of space
Considering only inertial frames of reference and constant velocities, does the fact that any velocity, with the exception for the speed of light in a vacuum, can be transformed, via an accurate ...
- 145
0
votes
1
answer
56
views
Rotationated inertial frames and Galileo Relativity
Consider then a inertial frame $S$ and another one, $S'$.
The inertial frame $S'$ is at uniform motion with respect to $S$.
Both inertial frames are the Euclidian vector spaces $\mathbb{E}^3$ equipped ...
- 3,085