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  4. Why doesn't a Photon keep Accelerating?
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Why doesn't a Photon keep Accelerating?

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Offline talanum1 (OP)

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Why doesn't a Photon keep Accelerating?
« on: 16/04/2020 16:45:07 »
My theory has it that a tiny force keeps exerting it's influence on a Photon. Why doesn't the Photon keep accelerating?

Does F = ma apply, so that zero mass and finite force imply infinite acceleration?
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Offline Kryptid

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Re: Why doesn't a Photon keep Accelerating?
« Reply #1 on: 16/04/2020 16:49:35 »
Quote from: talanum1 on 16/04/2020 16:45:07
My theory has it that a tiny force keeps exerting it's influence on a Photon. Why doesn't the Photon keep accelerating?

The fact that it doesn't keep accelerating would be strong evidence that your idea is wrong.
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Offline talanum1 (OP)

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Re: Why doesn't a Photon keep Accelerating?
« Reply #2 on: 16/04/2020 17:57:42 »
It needs a force to start moving. I can arrange it so that a moving photon has cancelling force on it, using negative events of spacetime.
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Offline Kryptid

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Re: Why doesn't a Photon keep Accelerating?
« Reply #3 on: 16/04/2020 20:08:47 »
Quote from: talanum1 on 16/04/2020 17:57:42
It needs a force to start moving.

How do you know that?
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Offline Janus

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Re: Why doesn't a Photon keep Accelerating?
« Reply #4 on: 16/04/2020 21:05:06 »
Quote from: talanum1 on 16/04/2020 17:57:42
It needs a force to start moving.
Nope. A photon is already moving at c upon its creation. 
Quote
Does F = ma apply, so that zero mass and finite force imply infinite acceleration?
a = F/m where m equals zero results in a  division by zero, which is undefined, not infinite.

This is not a problem for the photon as it never accelerates.
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Offline evan_au

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Re: Why doesn't a Photon keep Accelerating?
« Reply #5 on: 16/04/2020 21:27:12 »
Quote from: OP
My theory has it that a tiny force keeps exerting it's influence on a Photon. Why doesn't the Photon keep accelerating?
A Metaphor - Waves on a Pond
One of the enduring (and useful) metaphors for light is that of a wave - like a stone dropped in a pond has ripples spreading out.

The stone represents an initial input of energy.
- The waves/ripples carry that energy off "to infinity" (unless it runs into a bank, or reeds, etc).
- Nothing has to accelerate the ripples - they will keep a steady speed assuming that they are in a uniform medium (water of of constant density and depth, and constant gravity, etc).
- Nothing has to retard the ripples - they will keep a steady speed assuming that they are in a uniform medium
- The ripples do get lower in intensity as time goes by - the constant energy is spread over a larger and larger area.

Back to Light
Light (photons) has an initial input of energy, from an electron dropping from one shell to a lower one.
- The electromagnetic waves carry that energy off "to infinity" (unless it runs into a brick wall, a sheet of paper, etc).
- Nothing has to accelerate the waves - they will keep a steady speed assuming that they are in a uniform medium (usually a vacuum, but any medium of constant permittivity & permeability will also work).
- Nothing has to retard the waves - they will keep a steady speed assuming that they are in a uniform medium
- The waves do get lower in intensity as time goes by - the constant energy is spread over a larger and larger area.

Quote from: George Box
all models are wrong, but some are useful
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Offline talanum1 (OP)

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Re: Why doesn't a Photon keep Accelerating?
« Reply #6 on: 17/04/2020 09:39:17 »
Quote from: Kryptid on 16/04/2020 20:08:47
How do you know that?

I don't know, but it seems logical.

Quote from: Janus on 16/04/2020 21:05:06
Nope. A photon is already moving at c upon its creation. 

Can you prove that - it seems illogical. We have E = pc and this requires a force: E is related to work (W = f ds). "They start out with a velocity" is equivalent to having infinite acceleration.
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Offline Bored chemist

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Re: Why doesn't a Photon keep Accelerating?
« Reply #7 on: 17/04/2020 10:28:23 »
Quote from: talanum1 on 17/04/2020 09:39:17
Can you prove that
Yes.
The only possible speed for light is c.
You can calculate it from Maxwell's equations
https://en.wikipedia.org/wiki/Maxwell%27s_equations#Vacuum_equations,_electromagnetic_waves_and_speed_of_light

Since it can't aheva speed other than c, it can't accelerate.
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Offline talanum1 (OP)

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Re: Why doesn't a Photon keep Accelerating?
« Reply #8 on: 17/04/2020 15:16:01 »
Maxwell's Equations does not provide a mechanism whereby the protophoton gains velocity to become a photon.
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Offline Bored chemist

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Re: Why doesn't a Photon keep Accelerating?
« Reply #9 on: 17/04/2020 15:19:14 »
Quote from: talanum1 on 17/04/2020 15:16:01
protophoton
You need to prove that such an entity exists.
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Offline talanum1 (OP)

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Re: Why doesn't a Photon keep Accelerating?
« Reply #10 on: 17/04/2020 15:53:44 »
They must exist otherwise there is no mechanism for a photon to reach lightspeed.

Physically they exist if the fields are different from Maxwell's Equations close to the emitting surface. I have no equipment to test this.
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Offline Janus

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Re: Why doesn't a Photon keep Accelerating?
« Reply #11 on: 17/04/2020 16:08:42 »
Quote from: talanum1 on 17/04/2020 15:53:44
They must exist otherwise there is no mechanism for a photon to reach lightspeed.

Physically they exist if the fields are different from Maxwell's Equations close to the emitting surface. I have no equipment to test this.
Just because you don't grasp how a photon can come into existence already moving at c doesn't mean that it doesn't happen.
"I don't understand it, so it must be wrong" is not a valid argument.
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Offline talanum1 (OP)

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Re: Why doesn't a Photon keep Accelerating?
« Reply #12 on: 17/04/2020 16:23:28 »
Then you must provide a mechanism whereby they start to exist at light speed. I can provide one.
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Offline Bored chemist

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Re: Why doesn't a Photon keep Accelerating?
« Reply #13 on: 17/04/2020 17:34:00 »
Quote from: talanum1 on 17/04/2020 16:23:28
Then you must provide a mechanism whereby they start to exist at light speed. I can provide one.
Yes, but your idea doesn't work.
Quote from: Kryptid on 16/04/2020 16:49:35
Quote from: talanum1 on 16/04/2020 16:45:07
My theory has it that a tiny force keeps exerting it's influence on a Photon. Why doesn't the Photon keep accelerating?

The fact that it doesn't keep accelerating would be strong evidence that your idea is wrong.
Why bother to invent the "protophoton" to bolster a model that gives the wrong answer anyway?
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Offline talanum1 (OP)

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Re: Why doesn't a Photon keep Accelerating?
« Reply #14 on: 17/04/2020 17:39:24 »
I can change my model to give the correct answer.
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Offline Bored chemist

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Re: Why doesn't a Photon keep Accelerating?
« Reply #15 on: 17/04/2020 17:43:36 »
Why not just use the "old" model which already gives the right answer?
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Offline Bobolink

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Re: Why doesn't a Photon keep Accelerating?
« Reply #16 on: 17/04/2020 22:00:16 »
Quote from: talanum1 on 17/04/2020 17:39:24
I can change my model to give the correct answer.
Quite easily since your "model" is essentially 2 sentences long.
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Offline talanum1 (OP)

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Re: Why doesn't a Photon keep Accelerating?
« Reply #17 on: 18/04/2020 14:14:57 »
Quote from: Bored chemist on 17/04/2020 17:43:36
Why not just use the "old" model which already gives the right answer?

The old model does not give a mechanism to accelerate photons to light speed.

Quote from: Bobolink on 17/04/2020 22:00:16
Quite easily since your "model" is essentially 2 sentences long.

It is actually longer see attachments:
* Physics from Axioms Advanced.pdf (64.69 kB - downloaded 429 times)
* Physics from Axioms clean.pdf (124.44 kB - downloaded 552 times)
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Offline Bored chemist

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Re: Why doesn't a Photon keep Accelerating?
« Reply #18 on: 18/04/2020 15:07:26 »
Quote from: talanum1 on 18/04/2020 14:14:57
The old model does not give a mechanism to accelerate photons to light speed.
Guess again.
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Offline Bobolink

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Re: Why doesn't a Photon keep Accelerating?
« Reply #19 on: 18/04/2020 15:10:46 »
Quote from: talanum1 on 18/04/2020 14:14:57
The old model does not give a mechanism to accelerate photons to light speed.
Did you miss the post on Maxwell?
Quote from: talanum1 on 18/04/2020 14:14:57
It is actually longer see attachments:
No thanks.  If you have more to say, then post it.
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