Munim Posted 5 hours ago Share Posted 5 hours ago What is the nature of the motion of light with respect to itself? Does it experience time and displacement? Link to comment Share on other sites More sharing options...
swansont Posted 5 hours ago Share Posted 5 hours ago Relativity doesn’t afford us the ability to say; light is not in an accessible frame of reference, so the transforms do not work. Link to comment Share on other sites More sharing options...
MigL Posted 4 hours ago Share Posted 4 hours ago 50 minutes ago, Munim said: What is the nature of the motion of light with respect to itself Without any reference, like air resistance, ir points passed, such as empty space, would you feel motion or displacement ? I assume it feels a little stressed from the stress-energy-momentum tensor forcing it to change its path through curved space-time around massive bodies. Bad pun ?? Link to comment Share on other sites More sharing options...
exchemist Posted 4 hours ago Share Posted 4 hours ago (edited) 1 hour ago, Munim said: What is the nature of the motion of light with respect to itself? Does it experience time and displacement? In theory it does not experience time (time dilation -> ∞ as v -> c). Absent any sense of time, it seems to me that "experience" has no meaning. Edited 4 hours ago by exchemist Link to comment Share on other sites More sharing options...
swansont Posted 3 hours ago Share Posted 3 hours ago 1 hour ago, exchemist said: In theory it does not experience time (time dilation -> ∞ as v -> c). Absent any sense of time, it seems to me that "experience" has no meaning. It’s undefined. You can’t use the Lorentz transform to shift between an inertial frame and that of a photon, and back. Link to comment Share on other sites More sharing options...
geordief Posted 2 hours ago Share Posted 2 hours ago 1 hour ago, MigL said: Without any reference, like air resistance, ir points passed, such as empty space, would you feel motion or displacement ? I assume it feels a little stressed from the stress-energy-momentum tensor forcing it to change its path through curved space-time around massive bodies. Bad pun ?? Would it rather see the world moving (jiggling) and itself just traveling in a "straight line"? Would it experience the alternating magnetic/electric fields or do they disappear in its "own frame"? Link to comment Share on other sites More sharing options...
swansont Posted 23 minutes ago Share Posted 23 minutes ago 2 hours ago, geordief said: Would it rather see the world moving (jiggling) and itself just traveling in a "straight line"? Why jiggling? (The sinusoidal depictions of E & M fields are the field strength, not their trajectory, if that’s what this is a reference to) Link to comment Share on other sites More sharing options...
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