Re: Spaceship Question




"PD" <TheDraperFamily@xxxxxxxxx> wrote in message
news:1138895273.976996.218280@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

kenseto wrote:
"PD" <TheDraperFamily@xxxxxxxxx> wrote in message
news:1138817866.743854.117450@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

I said no such thing. I said that measuring the length is certainly
possible while it's moving.

Sure it's possible....but the result does not support length
contraction.

In the case of radars and planes, that's exactly what I said in the
part you snipped. In the other experiments I referred you to, however,
length contraction is apparent.

In
every text book I ever read you need to mark both ends of a moving rod
simultaneously in your frame to measure the length of a moving rod. You
have
not provide any experiment that does this.

On the contrary, I referred you to rapidity distributions in fixed
target and collider experiments that do require simultaneity in the
measurement of lengths, and where Lorentz contraction is apparent.
Unfortunately, you do not choose to look them up and read them.

Your problem is: that you don't understand that length contraction (in SR)
is an apparent effect.

Ken Seto


.



Relevant Pages

  • Re: The Impossibility of Spacelike Length Contraction
    ... :> THE IMPOSSIBILITY OF SPACELIKE LENGTH CONTRACTION ... :> methods of measuring a length in a moving inertial frame by ... :> 1) A light pulse is sent from one end of the moving length to ... you are - at a fundamental level - comparing waves with waves. ...
    (sci.physics.relativity)
  • Re: Time Dilation achieves isotropic Speed
    ... He thought that if the length of a moving object contracted, ... contraction does not imply that the object in motion is shorter. ... What it means is that length of 100m in the stationary system is ... system is shorter because the measuring metre stick is longer. ...
    (sci.physics.relativity)
  • Re: Spaceship Question
    ... kenseto wrote: ... I said that measuring the length is certainly ... possible while it's moving. ... and where Lorentz contraction is apparent. ...
    (sci.physics.relativity)
  • Re: Is length contraction real?
    ... >> experiment from within the reference frame that contains the observed ... > property of *moving* objects that we measure with this method ... > "the apparent length of the object", then length contraction is ...
    (sci.physics)
  • Re: Is length contraction real?
    ... >> experiment from within the reference frame that contains the observed ... > property of *moving* objects that we measure with this method ... > "the apparent length of the object", then length contraction is ...
    (sci.physics)