Re: Laser snipers

On 21-Sep-01 at 08:59, Richard Kirke (richardkirke@hotmail.com) wrote:

> The de Broglie wavelenght is expressed as planks constant/its momentum
(aha
>  I here you cry if it has momentum then it must have mass, resulting
in 
> recoil...) But: Plank's constant is REALLY Small 
> (0.00000000000000000000000000000000002, or around that) and so the
momentum
>  is Really small too, since the velocity is pretty big (the speed of
> light)  this means that the mass must be very very 
>
small:(0.000000000000000000000000000000000000000000000000000000000000000
01 
> Kg) so yes there is SOME recoil, but barely noticable (like the recoil
when
>  you speak), so I'm not sure how you would use light as a drive for a
> space  ship.

I had a physicist friend that made a SF RPG.  Initially he was going
to use a laser drive, that is until he figured out that at 1G
acceleration you could kill a planet with the thing.