RE: Solar sailing vs. laws of physics ?

From: Adrian Tymes (wingcat@pacbell.net)
Date: Thu Jul 03 2003 - 20:34:26 MDT

  • Next message: Eliezer S. Yudkowsky: "Re: Solar sailing vs. laws of physics ?"

    --- Jeff Davis <jrd1415@yahoo.com> wrote:
    > To put it another way, if the victim has two radar
    > receivers, one facing towards the incoming pulse to
    > sample its frequency, and one mounted off a ways and
    > pointed backwards to sample the reflected pulse,
    > wouldn't they read the same frequency, and leave us
    > back where we started?

    Relativity. If they're not moving relative to the
    radar gun, they see what the radar gun sees. If
    they're not moving relative to the car, they *are*
    moving relative to the radar gun, and their
    measurements are (from the radar gun's point of view)
    affected accordingly.



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