General > General Technical Chat
How does the electron make a photon in an antenna?
TimFox:
--- Quote from: Zero999 on February 01, 2023, 10:22:01 pm ---Photons are emitted in an antenna because charges are accelerating and decelerating, which generates photons. The faster the rate of change in velocity, the higher the energy the photon emitted.
The concept of a photon really only really makes sense at higher frequencies/energies i.e. the shorter infrared wavelengths. At radio frequencies a single photon is such a tiny amount of energy, it's impossible to detect a single photon.
--- End quote ---
Exactly. In classical electromagnetism textbooks, one normally starts with an "elementary dipole", which is much shorter than a half wavelength, and applies a sinusoidal current waveform to the terminals.
However, in electron accelerators with approximately circular orbits, the centripetal acceleration that keeps the electrons in the orbit also produces EM radiation.
Towards the end of the EM textbooks, the field from a single charged particle undergoing acceleration is treated.
aetherist:
--- Quote from: TimFox on February 01, 2023, 09:51:20 pm ---"Electron electricity & electron atoms & photonic radio signals work ok, if u ignore & work around where they dont."
Where don't they work?
They certainly work for transmission lines, antennas, radioactivity, atomic spectroscopy, charged-particle beam accelerators, chemistry, molecular scattering, and a host of other well-studied and understood practical problems.
How would you pitch your proposed theory to, for example Texas Instruments or Intel, to replace their understanding of charge motion in semiconductors?
--- End quote ---
Electron electricity karnt explain why the speed of electricity on a wire is 2c/3 if the wire is insulated – but my ELEKTON elekticity explains immediately (ie my ELEKTONS propagate on the surface of the Cu, ie in the insulation if there is no air there).
Charge in semiconductors i daresay works ok & the same whether atoms include my orbiting ELEKTRONS or (silly) orbiting electrons.
Plus if needed (to explain semiconductors or any static charge problem) i am ok with invoking free electrons (photons that have formed a loop) – free electrons can migrate freely-ish (albeit mainly on surfaces) at slowish speeds.
This kind of slow electron electricity (free electrons migrating on surfaces) is i think a valid form of electricity (compared to the silly electron drift inside a wire naïve form of electricity) – but electron electricity is probly only of nuisance value in most cases.
--- Quote from: TimFox on February 01, 2023, 09:51:20 pm ---There are lots of not fully understood issues in the physical universe such as dark matter: why not apply your endeavours in that direction?
And yes, quantum mechanics did change our understanding of the world around us in many profound ways, yet some people still think that it is icky.
--- End quote ---
I have already spent lots of time on dark matter stuff.
I am ok with QM – it seems that it is a very good model for many applications – but no model is reality – a model is a model.
aetherist:
--- Quote from: RJHayward on February 01, 2023, 09:56:48 pm --- But, yet again, you've ignored the real question, related to your validity, here. Put aside the techno-crap you spew, and answer, in straight, organizational, entity oriented language:
What is your direction, then ? Publish this, in a blog ?
Is this subject published by you, ANYWHERE else ?
Because, as a person, you look like a paranoid, with quick to defend responses, spewing out that mis-spelled techno-sounding crapola...and never really answering, then, a straight question.
Straight questions get ignored...until some other post brings up the slightest technology subject; then you are back, in the driver's seat, full speed.
I'm learning, how to operate, as a paranoid ego, watching your infantile performance.
You, are abusing this forum, but tiny harmless fools persist, comparatively. At least, learn to spell 'SKOOL'.
(OR go to one.)
Thank you
--- End quote ---
I haven't published re ELEKTONS & i probly wont.
But, ignoring any of my foolish abusive infantile paranoid speeding & spewing, what do u really think about my 3 ideas, in particular my ELEKTON elekticity on a wire.
aetherist:
--- Quote from: Zero999 on February 01, 2023, 10:22:01 pm ---Photons are emitted in an antenna because charges are accelerating and decelerating, which generates photons. The faster the rate of change in velocity, the higher the energy the photon emitted.
The concept of a photon really only really makes sense at higher frequencies/energies i.e. the shorter infrared wavelengths. At radio frequencies a single photon is such a tiny amount of energy, it's impossible to detect a single photon.
--- End quote ---
The OP was as follows…………..
--- Quote from: raspberrypi on February 07, 2017, 04:56:41 am ---We know how an electron makes a photon in an LED. It jump from a higher orbital to a lower one emitting a photon. But in an antenna its occupying the same valance just with a different nucleus each hop. How is the energy transferred to a radio frequency photon?
--- End quote ---
raspberrypi is happy with the standard explanation that an electron jumping from a high energy orbit to a lower energy orbit emits a photon.
raspberrypi asks how does a migrating electron (which jumps from an orbit on one atom to the same orbit on say the adjacent atom) emit a photon.
The answer is always that (in an antenna) an accelerating (migrating) electron emits a photon, & that a decelerating (migrating) electron emits a photon. This puzzles me – i have some questions…….
1. When an electron migrates (jumps) from an atom to an atom – where (& when)(& what)(& why) is the acceleration & ditto the deceleration?
2. If most of the migrating electrons in the antenna are inside the antenna – how do the photons get outside?
3. How is it that acceleration emits a photon, & deceleration emits a photon? – shouldn’t one of these need the capture of a photon?
4. What causes an electron to migrate?
4(a). Is it pressure from other electrons from behind?
5. If migration is due to pressure from behind – how can that pressure wave propagate at c km/s when electrons have a finite mass?
6. If an electron is a hard little nut – what sort of process might be involved when the electron captures a photon or when it emits a photon? [This question applies to both the valence case & the migration case]
U might notice that for my ELEKTON elekticity the above questions do not arise or the answer is immediately obvious.
MathWizard:
As you go up in EM frequency, and the relevant wavelengths get shorter, when on a microchip, or in HF lasers, or microwave, or some device operating in a lab doing QM research, would you start seeing QM effects ?
I have QM books with math, now that I know some more complex numbers and differential equations, someday I'll learn some of it.
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