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What makes a photon move so fast



 
 
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  #1  
Old November 8th 04, 08:40 PM
Funland
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NO! photon has mass when it is traveling! It is why it is bent by gravity!
Photon does not have rest mass, but it has mass when it travels.


"John Zinni" ???
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"mick" wrote in message
...

A photon has mass


A photon is massless!!!


and its path can be bent by the gravity of stars. It can't
excape from a black hole because it has mass.


A photon is massless!!!


Would it be possible to bring one photon to a standstill using a

particle
accelerator so that it could studied..


No!!!



postman




  #2  
Old November 9th 04, 02:48 PM
mick
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Default What makes a photon move so fast

A photon has mass and its path can be bent by the gravity of stars. It can't
excape from a black hole because it has mass..
Would it be possible to bring one photon to a standstill using a particle
accelerator so that it could studied..

postman
  #3  
Old November 9th 04, 03:06 PM
John Zinni
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"mick" wrote in message
...

A photon has mass


A photon is massless!!!


and its path can be bent by the gravity of stars. It can't
excape from a black hole because it has mass.


A photon is massless!!!


Would it be possible to bring one photon to a standstill using a particle
accelerator so that it could studied..


No!!!



postman


  #4  
Old November 9th 04, 03:11 PM
Benign Vanilla
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"mick" wrote in message
...
A photon has mass and its path can be bent by the gravity of stars. It

can't
excape from a black hole because it has mass..
Would it be possible to bring one photon to a standstill using a particle
accelerator so that it could studied..


Do photons have mass?
http://www.usatoday.com/weather/reso...photonmass.htm

Can photons be stopped?
http://www.newscientist.com/news/news.jsp?id=ns9999340

BV.


  #5  
Old November 9th 04, 04:02 PM
mick
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John Zinni wrote:

"mick" wrote in message
...

A photon has mass


A photon is massless!!!


and its path can be bent by the gravity of stars. It can't
excape from a black hole because it has mass.


A photon is massless!!!


Would it be possible to bring one photon to a standstill using a particle
accelerator so that it could studied..


No!!!



postman


Ok I understand that in the first reply from Benign they didn't actually
stop light but transferred the information in the light to the gas atoms
and passed it back to the light. A neat trick nevertheless..

I am not saying you are worng John and I have read of two theories
lately(still reading) ie: Aether and also the curvature of space, that
don't I think require photons to have mass
But what about the discrete nature of a photon does that not imply
something..
and again why does it go so fast and so far. It is very strange to think
that if I go outside on a clear night to light my pipe. Photons released
from my match may still be travelling when the universe is ending.

postman
  #6  
Old November 9th 04, 04:15 PM
John Zinni
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"mick" wrote in message
...

Ok I understand that in the first reply from Benign they didn't actually
stop light but transferred the information in the light to the gas atoms
and passed it back to the light. A neat trick nevertheless..

I am not saying you are worng John and I have read of two theories
lately(still reading) ie: Aether and also the curvature of space, that
don't I think require photons to have mass


A photon is massless!!!

"What is the Mass of a Photon?"
http://math.ucr.edu/home/baez/physic...oton_mass.html


But what about the discrete nature of a photon does that not imply
something..
and again why does it go so fast and so far. It is very strange to think
that if I go outside on a clear night to light my pipe. Photons released
from my match may still be travelling when the universe is ending.


"Not only is the universe stranger than we imagine, it is stranger than we
can imagine."
- Sir Arthur Eddington -

  #7  
Old November 9th 04, 06:47 PM
G=EMC^2 Glazier
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My "Spin is in theory" tells where the photon gets its speed. Photons
never go faster or slower than "c" They can go a much longer
distance,and give a false measurement from A to B as shown with super
cold sodium. Going through this cold sodium gives the photons speed as
less than 3 miles per hour. (oh ya) Bert

  #8  
Old November 9th 04, 06:49 PM
mick
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John Zinni wrote:

"mick" wrote in message
...

Ok I understand that in the first reply from Benign they didn't actually
stop light but transferred the information in the light to the gas atoms
and passed it back to the light. A neat trick nevertheless..

I am not saying you are worng John and I have read of two theories
lately(still reading) ie: Aether and also the curvature of space, that
don't I think require photons to have mass


A photon is massless!!!

"What is the Mass of a Photon?"
http://math.ucr.edu/home/baez/physic...oton_mass.html


But what about the discrete nature of a photon does that not imply
something..
and again why does it go so fast and so far. It is very strange to think
that if I go outside on a clear night to light my pipe. Photons released
from my match may still be travelling when the universe is ending.


"Not only is the universe stranger than we imagine, it is stranger than we
can imagine."
- Sir Arthur Eddington -


So a photon is massless ergo it is small. Is it the smallest particle?

postman

  #9  
Old November 9th 04, 09:24 PM
John Zinni
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"Funland" wrote in message
...

NO! photon has mass when it is traveling! It is why it is bent by gravity!
Photon does not have rest mass, but it has mass when it travels.


"Do photons have mass?
The Answer
No, photons do not have mass, but they do have momentum. The proper, general
equation to use is E^2 = m^2c^4 + p^2c^2 So in the case of a photon, m=0 so
E = pc or p = E/c. On the other hand, for a particle with mass m at rest
(i.e., p = 0), you get back the famous E = mc^2."
http://imagine.gsfc.nasa.gov/docs/as...rs/960731.html


The rate at which things fall in a gravitational field is INDEPENDENT OF
MASS (even if that mass is zero).

  #10  
Old November 9th 04, 09:33 PM
mick
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G=EMC^2 Glazier wrote:

My "Spin is in theory" tells where the photon gets its speed. Photons
never go faster or slower than "c" They can go a much longer
distance,and give a false measurement from A to B as shown with super
cold sodium. Going through this cold sodium gives the photons speed as
less than 3 miles per hour. (oh ya) Bert


What speed will a photon travel at in a black hole.

postman
 




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