All Questions
Tagged with time speed-of-light
111
questions
4
votes
3
answers
1k
views
Is the meter relative to time?
Is the meter relative when we are near the speed of light?
I was reading a physics book and I found that the meter is the length that light travels for an amount of time, so since time is relative ...
11
votes
1
answer
866
views
Northern lights / aurora borealis "pre-warning" - how does this work w.r.t timing and different particle / wave speeds?
There is an article in the newspaper today entitled "Northern lights predicted in US and UK on Monday night in wake of solar storms".
I assume that the reason that someone can make this ...
- 213
-1
votes
4
answers
98
views
Does the speed of light determine how slow time can move?
Since moving faster makes time move slower. Does that mean that there is an absolute minimum rate at which time passes? If so. Is there also a maximum?
- 127
0
votes
1
answer
81
views
Relativity of Simultaneity- Train Experiment with 2 Countries signing Contract
I am having a hard time understanding the implications of one of the popular variations of the thought experiments associated with Relativity of simultaneity. The example goes as follows. 2 countries ...
- 101
0
votes
0
answers
108
views
Do photons moving at $c$ slow down when entering a medium or take a longer path and only appear to slow down and what happens to time? [duplicate]
Imagine a photon leaving a vacuum and entering a medium, say, air. I have 2 questions:
Some claim that the photon is slowed by the medium so its speed becomes less than $c$. Is that true or does ...
- 29
-2
votes
2
answers
60
views
Time dilation query [closed]
In the light clocks, time ticks via the motion of light and since speed of light is constant therefore when the clock is in motion ,the photon has to cover a greater distance by the perspective of an ...
0
votes
6
answers
218
views
Speed of Light and Time [closed]
I'm an amateur and this is my first question here, I'm trying to formulate question about a general representation I have in mind after trying to grasp the idea of relativity and the concept of space-...
- 143
0
votes
2
answers
106
views
What changes do we have when we consider time dilation of light clock? [closed]
According to the special theory of relativity, in moving body all physical processes are slower than they should be for a stationary body according to the time counts of a fixed (laboratory) frame of ...
- 149
1
vote
3
answers
245
views
How to prove that time slow down on all type of clocks? [duplicate]
I read about time dilation and how to prove time dilation existence with light clock.
But how to prove that time slow down on all other type of clocks (biological, mechanical, digital, electric, ...
- 149
0
votes
1
answer
114
views
If someone flies away from me quickly, and then I catch up to them, will our clocks be in sync or out of sync?
At time 0, Alice and Bob are stationary in space with their clocks synced. Then Alice, for $t=\text{1 day}$ (measured by herself), flies in one direction at the speed $v=0.99 c$, and then stops. Due ...
- 1,090
0
votes
0
answers
24
views
Does time slow down for light according to relativity? [duplicate]
According to Einstein's theory of relativity
Time slows for a individual who moves at the speed of light and time goes backward if the individual is faster than the speed of light.
So , is it that for ...
- 725
-1
votes
1
answer
55
views
Why light travel along with light clock? [duplicate]
I am interested in exploring time dilation effects. I came across a video and I learned that when we move a light clock in constant velocity the light bounce will take a longer time with more speed. ...
-3
votes
1
answer
83
views
Can you experience multiple points in time at a specific point in time? [closed]
So from my understanding, light takes time to travel to our eyes. So everything we see is from the past, right? So does that mean that at a specific point in time, we are seeing simultaneously a point ...
- 13
0
votes
2
answers
310
views
Can we see our solar system in the past from earth?
Since our solar system is moving through the milky way galaxy, if we point our telescope to a certain point where we determine that the solar system was a certain time ago, will we see our solar ...
- 119
-4
votes
1
answer
127
views
Assuming that the speed of light slows down, will the physical phenomena also be slowed down? [closed]
I rephrase a closed question.
In the context of Newtonian spacetime, and so assuming that the speed of light slows down relative to an moving object, will the physical phenomena of that object also be ...
- 97