Re: Another look at the Lorentz factor.

Golden Boar:
The Lorentz factor is usually given by the equation:

gamma = 1/sqrt(1-v^2/c^2)

or by

beta = v/c
gamma = 1/sqrt(1-beta^2)

The equation can be written in a more intuitive (for me at least) way
as shown below:

gamma = c / sqrt(c^2 - v^2)

OK, your next assignment is to begin with an arbitrary lagrangian
density, L[q(x^u), d_v q(x^u)] and find the conserved currents and
charges if L is invariant under an infinitesimal spacetime displacement,
x^u -> x^u + a^u.


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