Timeline for Is it possible for a photon to be at rest?
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
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| Jul 19, 2013 at 22:17 | comment | added | cspirou | @Ovi - The photons don't really stop moving. They get absorbed and the photon disappears. | |
| Jul 19, 2013 at 22:10 | comment | added | Hansenet | You are talking about the diverse calorimeters of the compact muon solenoid (CMS) detector at the LHC accelerator at CERN. What is described the is how the diverse calorimeters are used to measure the energy of the particles involved in scattering collisions. The outcoming particles interact with the calorimeter material by which you measure the energy of these particles. The Photons and the other particles are not stopped, they are absorbed by the calorimeter depending on which interaction they take part. That why there are electromagnetic and other calorimeters. | |
| Jul 19, 2013 at 22:03 | comment | added | Ovi | @fffred please see the above comment | |
| Jul 19, 2013 at 22:02 | comment | added | Ovi | @Hansenet But I watched this video and at 5:23 they seem to be saying that the photon can be stopped: youtube.com/watch?v=5r6vyZ2bykg | |
| Jul 19, 2013 at 22:02 | comment | added | Hansenet | en.wikipedia.org/wiki/Special_relativity | |
| Jul 19, 2013 at 22:01 | comment | added | Hansenet | "From the Wikipedia article: The Principle of Invariant Light Speed – "... light is always propagated in empty space with a definite velocity [speed] c which is independent of the state of motion of the emitting body." "(from the preface).[1] That is, light in vacuum propagates with the speed c (a fixed constant, independent of direction) in at least one system of inertial coordinates (the "stationary system"), regardless of the state of motion of the light source. | |
| Jul 19, 2013 at 21:59 | comment | added | fffred | @Ovi, yes. This is probably the most famous outcome of the theory of relativity. | |
| Jul 19, 2013 at 21:57 | comment | added | Ovi | "special theory of relativity postulates that the speed of light is independent of the frame of reference" So if you were traveling at 99% of the speed of light (with respect to me) you would still measure the speed of light as 300, 000 m/s (with respect to you)? | |
| Jul 19, 2013 at 21:54 | history | answered | Hansenet | CC BY-SA 3.0 |