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Author Topic:   Galileo Was Wrong, Okay?
PaulK
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Posts: 17179
Joined: 01-10-2003


(1)
Message 8 of 54 (761303)
06-30-2015 1:03 PM
Reply to: Message 4 by Suzanne Romano
06-30-2015 12:45 PM


Miseducation.
quote:

The fact is that the relativity principle obviates the heliocentric model just as much as it supports that model. he argument is basically a two edged sword. The relativity argument cuts both ways. It can be used to argue for the moving earth, but then just as well against the moving earth. If all motion is relative, then the reference coordinate system is only a convention.

There's a big problem with that argument. Only inertial reference frames are equivalent. You can't treat an accelerating reference frame in the same way.


This message is a reply to:
 Message 4 by Suzanne Romano, posted 06-30-2015 12:45 PM Suzanne Romano has replied

Replies to this message:
 Message 18 by Suzanne Romano, posted 06-30-2015 3:06 PM PaulK has replied

  
PaulK
Member
Posts: 17179
Joined: 01-10-2003


Message 19 of 54 (761330)
06-30-2015 3:09 PM
Reply to: Message 18 by Suzanne Romano
06-30-2015 3:06 PM


quote:

"Accelerating reference frame" is a presupposition, and not a fact.

So you reject Newtonian mechanics too ? You think that circular motion is possible without acceleration ?


This message is a reply to:
 Message 18 by Suzanne Romano, posted 06-30-2015 3:06 PM Suzanne Romano has replied

Replies to this message:
 Message 20 by Suzanne Romano, posted 06-30-2015 3:29 PM PaulK has replied
 Message 23 by Suzanne Romano, posted 06-30-2015 3:35 PM PaulK has replied

  
PaulK
Member
Posts: 17179
Joined: 01-10-2003


Message 22 of 54 (761344)
06-30-2015 3:32 PM
Reply to: Message 20 by Suzanne Romano
06-30-2015 3:29 PM


You didn't answer the question. Do you reject Newtonian mechanics ? Do you maintain that the Earth can orbit the sun without accelerating ?

This message is a reply to:
 Message 20 by Suzanne Romano, posted 06-30-2015 3:29 PM Suzanne Romano has replied

Replies to this message:
 Message 24 by Suzanne Romano, posted 06-30-2015 3:36 PM PaulK has not replied

  
PaulK
Member
Posts: 17179
Joined: 01-10-2003


Message 25 of 54 (761347)
06-30-2015 3:41 PM
Reply to: Message 23 by Suzanne Romano
06-30-2015 3:35 PM


quote:

My research thus far indicates that the idea of circular orbits for the Sun and the Earth in the copernican model have been ruled out.

Well you see that isn't the issue.

The issue is whether relativity undermines itself by making a stationary Earth equivalent to an orbiting Earth, as you claimed. It does not. And the reason is that an orbiting Earth is accelerating, and therefore a frame of reference that takes the Earth as stationary cannot be equivalent because of that acceleration.


This message is a reply to:
 Message 23 by Suzanne Romano, posted 06-30-2015 3:35 PM Suzanne Romano has not replied

Replies to this message:
 Message 34 by NoNukes, posted 06-30-2015 5:12 PM PaulK has not replied

  
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