Timeline for Are E and B fields synchronous in light waves?
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
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| Aug 30, 2016 at 7:30 | vote | accept | CommunityBot | ||
| Aug 22, 2016 at 3:39 | comment | added | HolgerFiedler | @garyp I'm sceptic about the fullness of Maxwells equations because in a radio wave (in which zillions of photons bear the wave) an electric field bear an magnetic field bear an electric field an so on and this happens with the derivations of sin. I'm sure that it is possible to express this in modified Maxwell equations. BTW Ptolomeus earthcentristix view of the space was well established for approx. 1500 years :-) | |
| Aug 21, 2016 at 20:30 | comment | added | garyp | I read it, but I don't understand it. As I said earlier, energy is conserved, in either case, in phase or out of phase. I don't understand what you are getting with with your mention of sin and cos. You can ask for evidence and if I find it I'll post it, but this is so well established that I'm not optimistic about finding anything. You didn't answer my question: why do you doubt the answer given by Maxwell's equations? | |
| Aug 21, 2016 at 19:06 | comment | added | HolgerFiedler | @garyp Did you read my answer? Did you find any inconsistencies? It is not ok to ask about evidence from measurement? | |
| Aug 21, 2016 at 18:28 | comment | added | garyp | By the way ... do you doubt that E and B are in phase? If so, why? Maxwell's equations are unambiguously clear on this. Do you doubt Maxwell? Or are you just curious to see if it's ever been measured? | |
| Aug 21, 2016 at 14:07 | comment | added | garyp | I'll see what I can find. But the theory is so clear, so unambiguous about this, and the theory is so successful, that it's not likely that anyone would have ever done the experiment. | |
| Aug 21, 2016 at 12:16 | comment | added | HolgerFiedler | @garyp please give a source for the measurement of the far field components and it's shift or no-shift of radio waves. | |
| Aug 21, 2016 at 12:10 | comment | added | garyp | The E and B fields of radio waves can be measured, and in the far field they are in phase. There is no difference between the behavior of optical waves and radio waves. Fields are not made of photons. Photons are excitations of fields. The fields exist whether or not there are any photons in them. | |
| Aug 21, 2016 at 12:09 | comment | added | HolgerFiedler | @garyp And about what are photons, what is EM radiation and what are radio waves I expressed myself very clear here | |
| Aug 21, 2016 at 12:05 | comment | added | HolgerFiedler | @garyp It seems to be a mantra that in the far field of a radio wave there is no shift since it was never measured, see your own comment. And how we can learn something about photons if not from the behaviour of radio waves there a huge number of photons get emitted from accelerated electrons? The appearing fields are made from this photons and this is why we know that each photon has varying electric and magnetic field components. | |
| Aug 21, 2016 at 11:59 | comment | added | garyp | I don't think this answers the question. Also, note that the phase shift has nothing to do with conservation of energy. Energy is conserved when there is a phase shift (near the antenna) and when there is no phase shift (far away from the antenna). Note also that using the language of photons and the language of fields at the same time leads to a confused picture. | |
| Aug 21, 2016 at 11:50 | history | answered | HolgerFiedler | CC BY-SA 3.0 |