What are the main paradoxes in Special Relativity?

In summary, the intention here is to discuss paradoxes in Special relativity in mainstream physics, any idea?
  • #1
koorosh.shahd
5
0
The intention here is to discuss paradoxes in Special relativity in mainstream physics, any idea?
 
Physics news on Phys.org
  • #2
Hi koorsh.shahd, welcome to PF.

Please have a look at all of the many, many, many such threads in the relativity sub forum.
 
  • #3
https://www.physicsforums.com/tags.php?tag=paradox
 
Last edited by a moderator:
  • #4
Thanks, very good, also it happens to be another paradox, which arguments that Lorentz Transformation would be violated for two slow moving observers that observe a fast moving lab system.
Please check:
http://www.scipub.org/fulltext/pi/pi1153-56.pdf
 
Last edited by a moderator:
  • #5
koorosh.shahd said:
Thanks, very good, also it happens to be another paradox, which arguments that Lorentz Transformation would be violated for two slow moving observers that observe a fast moving lab system.
Please check:
http://www.scipub.org/fulltext/pi/pi1153-56.pdf

This is from your paper,
... this means O’ and O” frames will measure the energy of created pairs differently which is inconsistent with Special Relativity principal.
I'm sure you are aware that energy and momentum are not Lorentz invariant independently, and have taken this into account.
 
Last edited by a moderator:
  • #6
From the paper in post #5:

...so far there is no evidence that speed of light would be invariant in
vacuum regardless it is emitted form a stationary or moving body...



I thought that since Einstein's relativity the best evidence so far is that the speed of light IS invarient whether emitted from a stationary or moving body...

Note: That paper would benefit from editing to correct English usage.
 
Last edited:
  • #7
As regards: energy and momentum, imagine, different systems measure their own energy or mass with regards to their invariant mass, but other systems measure their energy increased relatively by ɣ for instance. In a moving system, the energy of the photon is also increased by same factor ɣ measured by a stationary system. So far so good as the energy is consistent with weather measured by the moving observer or stationary observer, so is the created pairs' masses. But considering the fact in above article this gets inconsistent for instance for the slow moving observers.

As regards the other statement that speed of light is invariant in vacuum, so far there is no evidence that can prove the opposite but the speed of light is variant in for instance in different gases with different densities and is measurable, this means that absolute motion is detectable and not relative as Einstein thought.
 
  • #8
koorosh.shahd said:
As regards: energy and momentum, imagine, different systems measure their own energy or mass with regards to their invariant mass, but other systems measure their energy increased relatively by ɣ for instance. In a moving system, the energy of the photon is also increased by same factor ɣ measured by a stationary system. So far so good as the energy is consistent with weather measured by the moving observer or stationary observer, so is the created pairs' masses. But considering the fact in above article this gets inconsistent for instance for the slow moving observers.

As regards the other statement that speed of light is invariant in vacuum, so far there is no evidence that can prove the opposite but the speed of light is variant in for instance in different gases with different densities and is measurable, this means that absolute motion is detectable and not relative as Einstein thought.

Sorry it was a miss spelling "weather" should be "whether"
 
  • #9
koorosh.shahd said:
As regards the other statement that speed of light is invariant in vacuum, so far there is no evidence that can prove the opposite but the speed of light is variant in for instance in different gases with different densities and is measurable, this means that absolute motion is detectable and not relative as Einstein thought.
No, this only allows you to detect motion relative to the gas, it doesn't pick out a preferred inertial reference frame. If you have one box of gas A and an identical box of gas B moving at high speed relative to A, and you send light through both boxes, observers at rest relative to each box of gas will get the same answer v1 when they measure the speed of light through their own box, and they will also both get the same answer v2 when they measure the speed of light through the other box.
 
Last edited:
  • #10
koorosh.shahd said:
The intention here is to discuss paradoxes in Special relativity in mainstream physics, any idea?

Looks like you are trying to promote your paper. From the abstract:

Eventually it is shown that observation by none-inertial frame is Galilean transformation
rather than Lorentz transformation. Conclusion: The outcome of physical experiments observed by inertial and none-inertial observers are completely different as they observe i.e., a fast-moving inertial frame which potentially contradicts Lorentz symmetry.

The above is known to be incorrect. I thought this forum was closed to promoting and debating fringe theories, correct?
 
  • #11
I don't call it promoting a paper, in fact that we are discussing a paradox like any other paradoxes, please explain why incorrect?
 
  • #12
As starthaus explained, discussion of non-mainstream personal theories is not permitted. Please refer to the Physics Forums Global Guidelines, which are linked at the top of every page under “Rules”, for a full explanation of our rules; note especially the section on "Overly Speculative Posts".
 

FAQ: What are the main paradoxes in Special Relativity?

What is the Special Relativity Paradox?

The Special Relativity Paradox refers to a set of thought experiments and observations that seem to contradict the theory of special relativity. These paradoxes arise from the fact that the theory of special relativity predicts effects that are counterintuitive and seemingly impossible.

What is the Twin Paradox?

The Twin Paradox is a thought experiment in which one twin travels at high speeds in space while the other remains on Earth. According to special relativity, the traveling twin will experience time dilation and will return to Earth younger than their twin. This seemingly paradoxical situation can be explained by the difference in relative velocities between the two twins.

What is the Length Contraction Paradox?

The Length Contraction Paradox arises from the fact that according to special relativity, objects appear shorter when moving at high speeds. This seems to contradict our everyday experience, where objects do not appear to change in length based on their speed. However, this paradox can be resolved by understanding that length is a relative concept and depends on the observer's frame of reference.

What is the Ladder Paradox?

The Ladder Paradox is a thought experiment in which a ladder is placed inside a barn and is moving at high speeds. According to special relativity, the length of the ladder will appear shorter to an observer outside the barn, causing it to fit inside the barn even though it is longer than the barn. However, this paradox can be resolved by considering the relativity of simultaneity and the fact that different observers will measure the length of the ladder differently.

How do these paradoxes relate to the theory of special relativity?

These paradoxes are a direct result of the principles of special relativity, namely time dilation, length contraction, and the relativity of simultaneity. They serve to highlight the counterintuitive nature of these principles and the fact that our everyday experience does not always align with the predictions of special relativity. However, these paradoxes have been confirmed by numerous experiments and are an essential part of our understanding of the universe.

Back
Top