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Old Jul 9th 2017, 12:29 PM   #1
wad
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photon

Will a photon released into space that never impacts anythings travel at the speed of light forever - even beyond the boundaries on the 93B light year diameter of the known universe?

Further on this point: if 10^30 or 10^50 photons are continuously flowing beyond the edge of the universe where no mass exists and they will flow without time or space limits, this is a tremendous continuous permanent emission of energy away from the "system" - any significance for the "law of conservation of energy"?

Last edited by wad; Jul 10th 2017 at 12:05 PM. Reason: follow on question
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Old Jul 9th 2017, 05:40 PM   #2
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Given your assumptions, yes, of course. Why would you question that? Are you clear on what "known universe" means? That is simply the part of the universe we can currently see or detect. It does not mean that there is a barrier or that there is nothing beyond it.
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Old Jul 9th 2017, 08:25 PM   #3
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Originally Posted by wad View Post
Will a photon released into space that never impacts anythings travel at the speed of light forever - even beyond the boundaries on the 93B light year diameter of the known universe?
Some here must be wondering if the universe is 13.8Bn years old , and it expanded from nothing the size of a dot , and matter can't move faster than the speed of light , then how come the universe has a radius of 46 Bn light years ????

The theoreticians have an answer for this, of sorts, but it's yet more unproven theory! ... personally I'm very suspicious of big bang ...much contradictory evidence ...

What is truly mind blowing is that one star can put out so many photons, and in all directions , that we , billions of light years away , are showered with many per square mm.... from just one star!
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Old Jul 10th 2017, 05:35 AM   #4
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You've used a particle physics viewpoint since you are talking about a "photon" rather than a wave so I'll deal with it in reference to Quantum Mechanics.

If a particle is not observed it is called a "virtual" particle. You can assume some basic facts about its motion but, technically speaking, you have no information to work with. If we measure it then it's no longer a virtual particle.

-Dan
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Old Jul 10th 2017, 09:10 AM   #5
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Originally Posted by oz93666 View Post
Some here must be wondering if the universe is 13.8Bn years old , and it expanded from nothing the size of a dot ,
"nothing the size of a dot"? How can "nothing" have any size at all?

and matter can't move faster than the speed of light , then how come the universe has a radius of 46 Bn light years ????
Matter can't move faster than the speed of light. There is no such limit on the expansion of space.

The theoreticians have an answer for this, of sorts, but it's yet more unproven theory! ... personally I'm very suspicious of big bang ...much contradictory evidence ...
Okay, could you cite some of that contradictory evidence?

What is truly mind blowing is that one star can put out so many photons, and in all directions , that we , billions of light years away , are showered with many per square mm.... from just one star!
Yes, it is. There are many things in the universe that are "mind blowing"! I think it is wonderful! Do you have a problem with it?
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Old Jul 10th 2017, 11:49 AM   #6
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Just to stir the pot...

Are not bosons defined as the mediators of interactions between fermions.

Therefore can a boson be "single ended"?
In other words can a fermion emit a boson without another fermion being ready to catch it?
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Old Jul 11th 2017, 12:11 AM   #7
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Originally Posted by HallsofIvy View Post
"nothing the size of a dot"? How can "nothing" have any size at all?
of course I was speaking euphemistically...singularity ..dot ...[/QUOTE]


Originally Posted by HallsofIvy View Post
Matter can't move faster than the speed of light. There is no such limit on the expansion of space.
That's what I meant by "theoreticians have an answer for it" ..lol


Originally Posted by HallsofIvy View Post
Okay, could you cite some of that contradictory evidence?
anomalous red shift in stars ... http://electric-cosmos.org/arp.htm

But put "big bang disproved" in search to find many respected physicists have other reasons for doubting this theory...

BB is just a theory, many such theories have come and gone.


Originally Posted by HallsofIvy View Post
Yes, it is. There are many things in the universe that are "mind blowing"! I think it is wonderful! Do you have a problem with it?
Where in the last sentence in my post is there any suggestion I "have a problem with it"... I described it as 'mind blowing'.

Don't worry ...I'll make it very clear if I have a problem with something ...lol

Last edited by oz93666; Jul 11th 2017 at 12:22 AM.
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Old Jul 15th 2017, 09:12 PM   #8
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Originally Posted by oz93666 View Post
The theoreticians have an answer for this, of sorts, but it's yet more unproven theory! ... personally I'm very suspicious of big bang ...much contradictory evidence ...
"unproven theory"? What is that supposed to mean to physics? No theory in physics can be, or ever has been, proven.

For more on this please see:


http://www.newenglandphysics.org/com...an_Guth_04.mp4
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Old Jul 20th 2017, 06:13 AM   #9
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Originally Posted by Pmb View Post
"unproven theory"? What is that supposed to mean to physics? No theory in physics can be, or ever has been, proven.

For more on this please see:


http://www.newenglandphysics.org/com...an_Guth_04.mp4
Do you care to elaborate? We do experiments to test the predictions made by scientists in their publications, usually refereed to as a hypotheses.
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Old Jul 23rd 2017, 07:04 AM   #10
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Originally Posted by wad View Post
Will a photon released into space that never impacts anythings travel at the speed of light forever - even beyond the boundaries on the 93B light year diameter of the known universe?

Further on this point: if 10^30 or 10^50 photons are continuously flowing beyond the edge of the universe where no mass exists and they will flow without time or space limits, this is a tremendous continuous permanent emission of energy away from the "system" - any significance for the "law of conservation of energy"?
Your questions are answered here: https://simple.wikipedia.org/wiki/He...f_the_universe

Last edited by Polemos; Jul 23rd 2017 at 08:10 AM.
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