Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > sci.physics.relativity > #376012

Re: Rotating Ring

From Henry Wilson <HGW@home.com>
Newsgroups sci.physics.relativity
Subject Re: Rotating Ring
Date 2016-02-11 08:24 +0000
Organization Aioe.org NNTP Server
Message-ID <n9hgf5$uni$1@gioia.aioe.org> (permalink)
References <3c28bc3e-6068-4798-b485-8a39613b9287@googlegroups.com>

Show all headers | View raw


On Wed, 10 Feb 2016 17:51:52 -0800, sepp623 wrote:

> In a rest frame there is a circular ring that is at rest.  If another
> inertial reference frame is moving with velocity V say along the x-axis
> of the rest frame, that moving frame measures this circular ring to be
> oval shaped due to Einstein's length contraction.
> 
> Now if this rest frame has a circular ring that has an angular rotation
> velocity of V, the moving frame has zero instantaneous velocity with
> with the top arc of the ring and has a velocity about 2V with respect to
> the bottom arc of the ring. If we make the ring diameter very, very
> large so that centrifical forces are negligible, using Einstein's length
> contraction concept why does the moving frame still measure the rotating
> ring to be the same symmetrical oval shape as when the ring is not
> rotating?  Why doesn't the moving frame measure a different length
> contraction at the top arc than it measures for the bottom arc resulting
> in a shape that is not symmetrical about the x-axis?

 The ring stays the same in all frames. Einstein's whole theory is crap! 

Thanks,
> David Seppala Bastrop TX

Back to sci.physics.relativity | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

Rotating Ring sepp623@yahoo.com - 2016-02-10 17:51 -0800
  Re: Rotating Ring Henry Wilson <HGW@home.com> - 2016-02-11 08:24 +0000
    Re: Rotating Ring JanPB <filmart@gmail.com> - 2016-02-11 01:30 -0800
      Re: Rotating Ring Muddy Shoes <shoes@muddyshoes.org> - 2016-02-11 13:46 +0000
      Re: Rotating Ring Henry Wilson <HGW@home.com> - 2016-02-11 15:51 +0000
  Re: Rotating Ring Sylvia Else <sylvia@not.at.this.address> - 2016-02-11 21:49 +1100
  Re: Rotating Ring Tom Roberts <tjroberts137@sbcglobal.net> - 2016-02-14 17:12 -0600

csiph-web