A Space & astronomy forum. SpaceBanter.com

Go Back   Home » SpaceBanter.com forum » Astronomy and Astrophysics » Astronomy Misc
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

Post-Sanity Science: Einstein's Twin Paradox



 
 
Thread Tools Display Modes
  #1  
Old April 27th 19, 03:56 PM posted to sci.astro
Pentcho Valev
external usenet poster
 
Posts: 8,078
Default Post-Sanity Science: Einstein's Twin Paradox

Einsteinians teach that time SLOWS DOWN for the traveler:

Brian Greene: "If you're moving relative to somebody else, time for you slows down." https://m.youtube.com/watch?v=QnmnLmwBmfE

Neil deGrasse Tyson: "...Einstein's special theory of relativity, which gives the precise prescription for how time would slow down for you if you are set into motion." http://abcnews.go.com/Entertainment/...ry?id=32191481

Jim Al-Khalili: "And, the faster you move and the longer you move at that speed, the slower your clock ticks, including your own internal biological clock, and so the slower you age - by tiny, tiny fractions of a second of course." http://www.jimal-khalili.com/blogs/2...m-with-the-app

Einsteinians teach that time SPEEDS UP for the traveler:

David Morin, Introduction to Classical Mechanics With Problems and Solutions, Chapter 11, p. 14: "Twin A stays on the earth, while twin B flies quickly to a distant star and back. [...] For the entire outward and return parts of the trip, B does observe A's clock running slow..." http://www.people.fas.harvard.edu/~djmorin/chap11.pdf

"The situation is that a man sets off in a rocket travelling at high speed away from Earth, whilst his twin brother stays on Earth. [...] ...the twin in the spaceship considers himself to be the stationary twin, and therefore as he looks back towards Earth he sees his brother ageing more slowly than himself." http://topquark.hubpages.com/hub/Twin-Paradox

"Time SPEEDS UP for the traveler" is an idiocy validly deducible from Einstein's 1905 postulates. The antithetical idiocy, "Time SLOWS DOWN for the traveler", is non sequitur.

In Big Brother's world minds oscillate between lie and truth:

"Doublethink means the power of holding two contradictory beliefs in one's mind simultaneously, and accepting both of them. [...] The process has to be conscious, or it would not be carried out with sufficient precision, but it also has to be unconscious, or it would bring with it a feeling of falsity and hence of guilt. [...] ...to use conscious deception while retaining the firmness of purpose that goes with complete honesty. To tell deliberate lies while genuinely believing in them, to forget any fact that has become inconvenient, and then, when it becomes necessary again, to draw it back from oblivion for just so long as it is needed, to deny the existence of objective reality and all the while to take account of the reality which one denies - all this is indispensably necessary." https://ebooks.adelaide.edu.au/o/orw...hapter2.9.html

In Einstein's schizophrenic world minds oscillate between the idiocy validly deducible from Einstein's 1905 postulates, "Time SPEEDS UP for the traveler", and the antithetical idiocy which is non sequitur - "Time SLOWS DOWN for the traveler".

The non sequitur is much more detrimental for human rationality and for that reason is almost universally taught. The above two quotations teaching the correct deduction, "Time SPEEDS UP for the traveler", are rare exceptions..

Pentcho Valev
  #2  
Old April 27th 19, 08:23 PM posted to sci.astro
Pentcho Valev
external usenet poster
 
Posts: 8,078
Default Post-Sanity Science: Einstein's Twin Paradox

In 1918 Einstein informed the gullible world that, as the traveling clock (twin) turns around and experiences acceleration, a HOMOGENEOUS gravitational field emerges. This homogeneous gravitational field somehow affects the distant stay-at-home clock and makes it run very fast (the stay-at-home twin suddenly gets very old) during the turning-around period:

Albert Einstein 1918: "A homogeneous gravitational field appears, that is directed towards the positive x-axis. Clock U1 is accelerated in the direction of the positive x-axis until it has reached the velocity v, then the gravitational field disappears again. An external force, acting upon U2 in the negative direction of the x-axis prevents U2 from being set in motion by the gravitational field. [...] According to the general theory of relativity, a clock will go faster the higher the gravitational potential of the location where it is located, and during partial process 3 U2 happens to be located at a higher gravitational potential than U1. The calculation shows that this speeding ahead constitutes exactly twice as much as the lagging behind during the partial processes 2 and 4." http://sciliterature.50webs.com/Dialog.htm

David Morin, Introduction to Classical Mechanics With Problems and Solutions, Chapter 11, p. 14: "Twin A stays on the earth, while twin B flies quickly to a distant star and back. [...] For the entire outward and return parts of the trip, B does observe A's clock running slow, but ENOUGH STRANGENESS occurs during the turning-around period to make A end up older." http://www.people.fas.harvard.edu/~djmorin/chap11.pdf

"When the twin in the spaceship turns around to make his journey home, the shift in his frame of reference causes his perception of his brother's age to change rapidly: he sees his brother getting suddenly older. This means that when the twins are finally reunited, the stay-at-home twin is the older of the two." http://topquark.hubpages.com/hub/Twin-Paradox

Einstein's 1918 idiocy was a crucial fudge factor that saved the "theory". Without recourse to "enough strangeness" (see David Morin's text above), Einstein's relativity predicts that either twin will find his brother younger when they reunite after the trip.

Einsteinians do teach Einstein's 1918 idiocy but never mention the "homogeneous gravitational field" - it is too idiotic, even by the standards of Einstein cult:

Richard Feynman: "So the way to state the rule is to say that the man who has felt the accelerations, who has seen things fall against the walls, and so on, is the one who would be the younger." http://www.feynmanlectures.caltech.edu/I_16.html

John Norton: "Moments after the turn-around, when the travelers clock reads just after 2 days, the traveler will judge the stay-at-home twin's clock to read just after 7 days. That is, the traveler will judge the stay-at-home twin's clock to have jumped suddenly from reading 1 day to reading 7 days. This huge jump puts the stay-at-home twin's clock so far ahead of the traveler's that it is now possible for the stay-at-home twin's clock to be ahead of the travelers when they reunite." http://www.pitt.edu/~jdnorton/teachi...yon/index.html

Physics Girl (4:30): "One last question. What's happening to the clocks during the period of acceleration? We still get time dilation, but we have to use a different set of rules from the general relativity. General relativity states that clocks runs slower in accelerated reference frames. So while your twin is turning around, her clock runs slower, and she sees the same thing. She sees your clock running faster than hers, so you're aging quicker.. It's during this period of acceleration that you become the older twin." https://www.youtube.com/watch?v=ERgwVm9qWKA

Pentcho Valev
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Albert Einstein: the Founder of Post-Sanity Science Pentcho Valev Astronomy Misc 2 March 8th 19 11:15 AM
Post-Truth (Post-Sanity) Education: Einstein's Time Travel Pentcho Valev Astronomy Misc 2 November 27th 18 09:17 AM
The Secret to Einstein's Twin Paradox Pentcho Valev Astronomy Misc 1 June 20th 17 07:56 AM
THE LIE ABOUT EINSTEIN'S TWIN PARADOX Pentcho Valev Astronomy Misc 2 August 15th 15 07:11 AM
EINSTEIN AND THE TWIN PARADOX Pentcho Valev Astronomy Misc 4 July 21st 14 10:01 AM


All times are GMT +1. The time now is 05:11 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 SpaceBanter.com.
The comments are property of their posters.