[TML] A little tinkering with Lasers

[Anthony Jackson]

Timothy Little wrote:

> Range increasing with the *square* of focal diameter seems rather
> unphysical.  Does it give any explanation for this?

Grav focus gives a virtual lens with size corresponding to the square of 
the actual lens size. This isn't explained, but is probably intended to 
allow space combat lasers at a reasonable size without producing silly 
ranges for smaller lasers.