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From: act@pur-phy.UUCP (Alex C. Tselis)
Newsgroups: net.physics
Subject: Re: Question on FTL and quantum mechanics
Message-ID: <1530@pur-phy.UUCP>
Date: Fri, 30-Nov-84 02:37:34 EST
Article-I.D.: pur-phy.1530
Posted: Fri Nov 30 02:37:34 1984
Date-Received: Sat, 1-Dec-84 05:58:14 EST
References: <654@ames.UUCP> <6201@mcvax.UUCP>
Distribution: net
Organization: Purdue Univ. Physics Dept., IN
Lines: 17

> ----------------------------------------------------------------------------
> How does one measure velocity?
> Velocity is length divided by time, both quantities that behave 'stange'
> under lorentz transformation (as does the mass).
> The things that are quantized are the invariant quantities such as
> impuls (=mass*velocity!) and energy.
> Increasing the impuls with one quantum in order to try to increase the velocity
> in the region of the speed of light does also increase the mass (remember?).
> The closer one gets to the speed of light the more impuls will contribute
> to the increase of mass.

It is stated that impulse and energy are quantized and invariant.  Really?
Although momentum and energy are quantized for particles moving in certain
kinds of potentials, this is certainly not always true.  Furthermore, neither
is a relativistic innvariant.  In fact, the momentum and energy form the 
components of a four-vector, which has the same Lorentz transformation
properties as any other four-vector, such as {x,y,z,t}.