All Questions
4
questions
2
votes
2
answers
819
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Using $ct$ axis instead of $t$ axis in special relativity
I've recently started studying the concept of space-time diagrams in special relativity, and I came across the concept of representing the time axis using $ct$, with units being that of length. Now I'...
- 1,791
10
votes
4
answers
2k
views
Is speed of light a ratio or a universal constant?
We use the speed of light to define the length of the meter, but we also use the speed of light to count the number of clicks on our clocks (because all the electromagnetic events on the smallest ...
2
votes
1
answer
94
views
Can speed of light vary from one to another region in universe?
I think speed of light and property of spacetime and gravity are interrelated. So is it possible that the speed of light in the past universe was more/less compared to now?, Does the property of ...
2
votes
5
answers
1k
views
The vacuum light speed: Is it really constant, i.e., independent of location in space-time?
I am by no means an expert in this field, however something puzzles me about the speed of light and the relativity of time and space (space-time).
Is is universally acknowledged that the speed of ...
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