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Sep
23
awarded  Famous Question
May
31
comment The speed limit is with respect to what?
@Nathaniel, unfortunately I don't have any books on relativity. I'm not a physics student, I ask this question just because I'm curious about these things.
May
31
comment The speed limit is with respect to what?
@Nathaniel, what was that answer he gave? can you post it as an answer?
May
31
revised The speed limit is with respect to what?
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May
31
comment The speed limit is with respect to what?
Can we think of this "apparent mass" as the inertia of an object?
May
31
revised The speed limit is with respect to what?
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May
30
asked The speed limit is with respect to what?
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10
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Sep
16
comment Can light travel slower than the maximum?
It's almost philosophical. If all we have are measurement of light's speed, and all those measurements turn out to be the same independently of the (inertial) reference, then all we can say is that the perceived speed of light is always the same. But we can't say that light moves always at the same speed because our perception is affected by our own speed. That's what I mean when I said that what's constant is the perceived speed of light and not the speed itself.
Sep
16
comment Can light travel slower than the maximum?
I'm being misunderstood. What I'm saying is that if you know about the constantness of light's speed and if you wrongly assume that that constantness is w.r.t a fixed motionless point (like I initially did) then you would think that light should be measure at different speeds depending if you are moving of not. So my conclusion is that it's not the speed itself what's constant but the perception of it.
Sep
15
comment Can light travel slower than the maximum?
But if you do know about the constantness of light's speed, then you would think... if we flash a light backwards, and we are moving the other way at speed v, then w.r.t us the light should be moving at speed c + v. But evidence says otherwise. It's the perception of the speed what's constant, not the speed per se.
Sep
14
accepted Can light travel slower than the maximum?
Sep
14
comment Can light travel slower than the maximum?
I'll accept your answer because you mention the fact that this is supported on empirical observations and not just somebody's theory. However, you say "He observes the light leaving his flashlight with a speed of u=+c" like it was an obvious fact, but that's exactly my question: why light's speed is not reduced like a tennis ball would. I guess the answer is... just because it's been seen experimentally that light behaves that way.
Sep
10
asked Can light travel slower than the maximum?
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