[net.physics] nazgul's query re speed of light

CSvax:Pucc-H:ab3@pur-ee.UUCP (10/13/83)

	Nazgul@apollo asks whether or not a light-sail vessel could 
reach the speed of light...and states...

	"It seems to me however, that part of the concept is that it would
take more energy that you can carry (alternatively the idea is that your
mass becomes infinite, in which case this question is moot)."

	You're absolutely right--the question is moot.  The source of
the energy, both in the sense of "Where does it come from?" and "What
form of energy is it?" does not matter; it still takes an infinite
amount to accelerate an object with non-zero rest mass to C.

Darth Wombat