All Questions
29
questions
2
votes
3
answers
65
views
If an observer was trapped in a closed box with no way to interact with the external surroundings how will he know if he is moving or at rest [duplicate]
I am a high-school student. Recently we learned the concepts of relative motion and velocity. The idea that anything in motion can subsequently be at rest depending on the frame of reference ...
- 21
1
vote
3
answers
135
views
Rotating Reference Frames And Their Phenomenon
In a rotating reference frame, while observing the proper motion of stars due to your spin, would you perceive time dilation when closely observing those stars?
0
votes
3
answers
127
views
Relativity of bodies in motion in space
I have learnt that if we are travelling in space we have no way to tell if we are moving towards something or if it is the something that is moving towards us; to either object they judge that they ...
- 1
-1
votes
3
answers
174
views
Trajectory of light send from a moving box [closed]
In a closed box in inertial motion a ball bounces up and down vertically. Apart from this movement, the ball is motionless relative to the box. The trajectory of the ball seen by a stationary observer ...
- 97
-1
votes
3
answers
108
views
Location of an object in empty space [closed]
Is it correct to assume that if there is only one object in the void (really empty void), then its location (the answer to the question “where” this object is) cannot be established?
You need at least ...
- 19
0
votes
2
answers
140
views
Is there any physical experiment that could tell us which object is moving to the other?
Imagine in empty space there are two objects in where one of them is moving to the other. How we can know which one is moving to the other? If there is an experiment that could tell us, would this ...
user319766
0
votes
5
answers
493
views
Is rotational motion relative, as is linear motion?
In special relativity only relative velocity is what matters. A rocket and the universe can be in relative linear motion. In the rocket the universe is in motion. The universe got this motion when it ...
user307025
0
votes
1
answer
39
views
${}$Reference frames [duplicate]
Most of the particles have different velocity in different reference of frames but why is speed of light the same in all refrence frames? After all light is made of a photon.
0
votes
1
answer
31
views
Does the magnitude of heat energy given or taken the same in any reference frame
So the question consists of two parts-
The random motion of the particles is equivalent the amount of heat energy. The velocity of collective motion does not result in heat energy. For example take ...
- 2,797
3
votes
4
answers
2k
views
Does Relativity make a difference on whether Earth revolves around the Sun or not?
According to the theory of relativity there is no ultimate preferred frame of reference in our universe. It means that whenever there is motion between object A and object B, whether it is considered ...
- 157
0
votes
2
answers
205
views
What does an observer in a reference frame moving with velocity of light see, when another reference frame with velocity c is launched in opposite? [closed]
Suppose a reference frame is moving with velocity c in +x direction. An observer is there. At any time instance, another reference frame with velocity c is launched in opposite direction, i.e. -x ...
28
votes
11
answers
6k
views
How can any speed be defined as a constant? [duplicate]
We know that the speed of light is a constant, and can therefore be used to calculate many other relative values, but I'm having difficulty understanding how speed can be a constant, seeing as it's ...
-1
votes
2
answers
177
views
Is it possible to determine if you are placed perfectly stationary in outer space?
Many questions and answers that I read are saying that it's not possible to determine absolute stationary position in space. But when I think about it, it seems weird and unlikely.
If you cross-...
- 101
0
votes
3
answers
82
views
Relative motion with relativity [closed]
In an inertial frame of reference (let's say a car moving with certain constant velocity in which I am sitting)
If I observe the motion of another car through my frame of reference i.e.car, will I be ...
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 ...
