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Re: rapidity

Hi Rob,

Is there a conceptual/physical interpretation of this quantity (rapidity)?

Bob

Bob Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net
http://www.velocity.net/~trebor

----- Original Message -----
From: Rob Davies <rodavies@DU.EDU>
To: <PHYS-L@lists.nau.edu>
Sent: Wednesday, September 01, 1999 3:17 PM
Subject: Re: rapidity


. . .Because of its utility in such problems, rapidity,
which is commonly given the symbol y, is defined by
y = tanh-1(ux/c)
(4)
where ux is the velocity along the x-axis.
. . .