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The twin paradox revisited



 
 
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  #1  
Old July 10th 07, 09:31 AM posted to sci.physics.relativity,sci.physics,sci.physics.cond-matter,sci.philosophy.tech,sci.astro
Pentcho Valev
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Posts: 8,078
Default The twin paradox revisited


harry wrote in sci.physics.relativity:
wrote in message
ups.com...
When I previously had access to the internet about ten years ago I
expressed interest in this topic and was informed that a space
traveller does not physically age at a slower rate but that his earth-
bound twin physically ages at a faster rate and only during the period
of acceleration following turn around.

Is this idea still in vogue? Has it been published in any peer
reviewed journal?


No. That idea may stem from Einstein's 1918 GRT solution of the twin
paradox, but it is not widely accepted: "induced gravitational fields" are
messy. See for example a discussion of a few years back:
http://tinyurl.com/2mu4jv


The reference is good: there is a quotation in it that shows how
students at the University of Illinois, Urbana-Champaign are converted
into zombies:

Tom Roberts: "Physics is LOCAL -- don't worry how the distant twin is
aging during the trip; all that can be tested experimentally is the
comparison of their clocks when they rejoin; compute that correctly
and be happy."

Tom Roberts is the Albert Einstein of our generation:

http://www.iit.edu/~bcps/database/se...culty_web_page

Pentcho Valev

  #2  
Old July 10th 07, 02:06 PM posted to sci.physics.relativity,sci.physics,sci.physics.cond-matter,sci.philosophy.tech,sci.astro
Shubee
external usenet poster
 
Posts: 20
Default The twin paradox revisited

On Jul 10, 1:31 am, Pentcho Valev wrote:
harry wrote in sci.physics.relativity:

wrote in message
oups.com...
When I previously had access to the internet about ten years ago I
expressed interest in this topic and was informed that a space
traveller does not physically age at a slower rate but that his earth-
bound twin physically ages at a faster rate and only during the period
of acceleration following turn around.


Is this idea still in vogue? Has it been published in any peer
reviewed journal?


No. That idea may stem from Einstein's 1918 GRT solution of the twin
paradox, but it is not widely accepted: "induced gravitational fields" are
messy. See for example a discussion of a few years back:
http://tinyurl.com/2mu4jv


The reference is good: there is a quotation in it that shows how
students at the University of Illinois, Urbana-Champaign are converted
into zombies:

Tom Roberts: "Physics is LOCAL -- don't worry how the distant twin is
aging during the trip; all that can be tested experimentally is the
comparison of their clocks when they rejoin; compute that correctly
and be happy."


The students aren't being converted into zombies. The professor is
merely instructing them on how to believe in a perfect mathematical
fantasy.

Shubee
http://www.everythingimportant.org/r...ty/special.pdf



  #3  
Old July 10th 07, 02:25 PM posted to sci.physics.relativity,sci.physics,sci.physics.cond-matter,sci.philosophy.tech,sci.astro
Pentcho Valev
external usenet poster
 
Posts: 8,078
Default The twin paradox revisited

Shubee wrote:
On Jul 10, 1:31 am, Pentcho Valev wrote:
harry wrote in sci.physics.relativity:

wrote in message
oups.com...
When I previously had access to the internet about ten years ago I
expressed interest in this topic and was informed that a space
traveller does not physically age at a slower rate but that his earth-
bound twin physically ages at a faster rate and only during the period
of acceleration following turn around.


Is this idea still in vogue? Has it been published in any peer
reviewed journal?


No. That idea may stem from Einstein's 1918 GRT solution of the twin
paradox, but it is not widely accepted: "induced gravitational fields" are
messy. See for example a discussion of a few years back:
http://tinyurl.com/2mu4jv


The reference is good: there is a quotation in it that shows how
students at the University of Illinois, Urbana-Champaign are converted
into zombies:

Tom Roberts: "Physics is LOCAL -- don't worry how the distant twin is
aging during the trip; all that can be tested experimentally is the
comparison of their clocks when they rejoin; compute that correctly
and be happy."


The students aren't being converted into zombies. The professor is
merely instructing them on how to believe in a perfect mathematical
fantasy....


and so converts them into zombies. But I made a mistake - Tom Roberts
does not convert students at the University of Illinois, Urbana-
Champaign into zombies. Rather, he converts students at Illinois
Institute of Technology, Department of Biological, Chemical, and
Physical Sciences, into zombies:

http://www.iit.edu/~bcps/database/se...frontend/index

But he will convert all University students into zombies sooner or
later - nothing can stop him.

Pentcho Valev

  #4  
Old July 10th 07, 08:19 PM posted to sci.physics.relativity,sci.physics,sci.physics.cond-matter,sci.philosophy.tech,sci.astro
The_Man
external usenet poster
 
Posts: 103
Default The twin paradox revisited

On Jul 10, 9:25 am, Pentcho Valev wrote:
Shubee wrote:
On Jul 10, 1:31 am, Pentcho Valev wrote:
harry wrote in sci.physics.relativity:


wrote in message
oups.com...
When I previously had access to the internet about ten years ago I
expressed interest in this topic and was informed that a space
traveller does not physically age at a slower rate but that his earth-
bound twin physically ages at a faster rate and only during the period
of acceleration following turn around.


Is this idea still in vogue? Has it been published in any peer
reviewed journal?


No. That idea may stem from Einstein's 1918 GRT solution of the twin
paradox, but it is not widely accepted: "induced gravitational fields" are
messy. See for example a discussion of a few years back:
http://tinyurl.com/2mu4jv


The reference is good: there is a quotation in it that shows how
students at the University of Illinois, Urbana-Champaign are converted
into zombies:


Tom Roberts: "Physics is LOCAL -- don't worry how the distant twin is
aging during the trip; all that can be tested experimentally is the
comparison of their clocks when they rejoin; compute that correctly
and be happy."


The students aren't being converted into zombies. The professor is
merely instructing them on how to believe in a perfect mathematical
fantasy....


and so converts them into zombies. But I made a mistake - Tom Roberts
does not convert students at the University of Illinois, Urbana-
Champaign into zombies. Rather, he converts students at Illinois
Institute of Technology, Department of Biological, Chemical, and
Physical Sciences, into zombies:

http://www.iit.edu/~bcps/database/se...frontend/index

But he will convert all University students into zombies sooner or
later - nothing can stop him.


The University of Illinois, Urbana-Champaign is one of the best
schools in the U.S. (and the world). What is your highest level of
education? Do you lie about your academic qualifications like
Androcles does?


Pentcho Valev- Hide quoted text -

- Show quoted text -



 




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