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Old 07-05-2018, 08:33 AM
 
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Thank you, Mike. That sounds very much like what I was reading when I came here to post my question. I shall listen, hoping the sound is clear. Sometimes, it is hard to understand what they are saying on those. I'll try.
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Old 07-05-2018, 03:24 PM
 
Location: The Driftless Area, WI
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Thanks for posting that, Mike. I thought I had it figured out until I watched it.


Photons don't experience time? Are they in heaven? (Or is that Iowa?)
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Old 07-05-2018, 05:34 PM
 
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Quote:
Originally Posted by guidoLaMoto View Post
Thanks for posting that, Mike. I thought I had it figured out until I watched it.


Photons don't experience time? Are they in heaven? (Or is that Iowa?)

If photons choose to go at their own speed, maybe they don't need to worry about time. Maybe they are the culprits who set time in the first place. But how did they get tangled up with space?


I am going to have to listen to it a couple more times. The man is speaking British which I still have not learned.
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Old 07-06-2018, 06:10 AM
 
Location: The Driftless Area, WI
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Originally Posted by Hazel W View Post
... The man is speaking British which I still have not learned...

This thread is giving me some good laughs. Thanks!
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Old 07-06-2018, 06:29 AM
 
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It's good for the soul. :-)
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Old 07-06-2018, 11:44 AM
 
Location: Maryland
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Someone told me some years ago (I’m not a physicist) that energy ONLY exists in the presence of matter, kinetic energy, potential energy, etc. Every time I think of energy I think of some particle carrying it, photons, etc. So is there “disembodied” energy, that can exist independent of any type of matter?
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Old 07-06-2018, 12:15 PM
 
2,454 posts, read 2,694,303 times
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Originally Posted by LesLucid View Post
Someone told me some years ago (I’m not a physicist) that energy ONLY exists in the presence of matter, kinetic energy, potential energy, etc. Every time I think of energy I think of some particle carrying it, photons, etc. So is there “disembodied” energy, that can exist independent of any type of matter?

That would have been my notion, too, as a non-physicist. First question that pops into my head is "are photons matter?" You have a very good question there. We await a good answer.
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Old 07-06-2018, 01:12 PM
 
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Originally Posted by Hazel W View Post
Thank you, Mike. That sounds very much like what I was reading when I came here to post my question. I shall listen, hoping the sound is clear. Sometimes, it is hard to understand what they are saying on those. I'll try.
Quote:
Originally Posted by guidoLaMoto View Post
Thanks for posting that, Mike. I thought I had it figured out until I watched it.


Photons don't experience time? Are they in heaven? (Or is that Iowa?)
You're both welcome.

Since time passes more slowly the faster an object moves, it makes sense that a photon traveling at the speed of light (in a vacuum) would not experience time.
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Old 07-06-2018, 01:56 PM
 
20,141 posts, read 15,459,217 times
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Quote:
Originally Posted by LesLucid View Post
Someone told me some years ago (I’m not a physicist) that energy ONLY exists in the presence of matter, kinetic energy, potential energy, etc. Every time I think of energy I think of some particle carrying it, photons, etc. So is there “disembodied” energy, that can exist independent of any type of matter?
Quote:
Originally Posted by Hazel W View Post
That would have been my notion, too, as a non-physicist. First question that pops into my head is "are photons matter?" You have a very good question there. We await a good answer.
It is an interesting question. And I am no expert on the subject. But all matter has mass, and nothing with mass can move through space at the speed of light, which in a vacuum is 186,282 miles per second. The Higgs field, which imparts mass to matter, prevents that. Photons of course do move at the speed of light in a vacuum.

On the other hand, quantum mechanics has shown that light behaves both as a wave and as a particle. And scientists have in fact been able to photograph light behaving both as a particle and as a wave at the same time. This photograph was taken in 2015 judging by the date of the article below.



https://phys.org/news/2015-03-particle.html

''A research team led by Fabrizio Carbone at EPFL has now carried out an experiment with a clever twist: using electrons to image light. The researchers have captured, for the first time ever, a single snapshot of light behaving simultaneously as both a wave and a stream of particles.''

Read more at: https://phys.org/news/2015-03-particle.html#jCp
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Old 07-06-2018, 02:20 PM
 
2,454 posts, read 2,694,303 times
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Originally Posted by Mike555 View Post
It is an interesting question. And I am no expert on the subject. But all matter has mass, and nothing with mass can move through space at the speed of light, which in a vacuum is 186,282 miles per second. The Higgs field, which imparts mass to matter, prevents that. Photons of course do move at the speed of light in a vacuum.

On the other hand, quantum mechanics has shown that light behaves both as a wave and as a particle. And scientists have in fact been able to photograph light behaving both as a particle and as a wave at the same time. This photograph was taken in 2015 judging by the date of the article below.



https://phys.org/news/2015-03-particle.html

''A research team led by Fabrizio Carbone at EPFL has now carried out an experiment with a clever twist: using electrons to image light. The researchers have captured, for the first time ever, a single snapshot of light behaving simultaneously as both a wave and a stream of particles.''

Read more at: https://phys.org/news/2015-03-particle.html#jCp

Thank you, Mike. Some times it is difficult coming to science through what I call the back door, meaning we're learning he latest without ever having the basics. That makes it double "fun".
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