On 25 Jun 2015 at 13:09, Tim wrote: > On Wed, Jun 24, 2015 at 11:01:36PM +0200, Knapp wrote: > > Have to ask Lenard, but if I remember correctly at those ranges > > laser focus becomes a huge problem anyway. > > Yes, though there are ways around it. The exact cause of weapons > having some finite effective range isn't really important. All that > matters is that it exists, and is large in comparison to the relative > distance that combatants can move in a second. I believe they are referring to the diffraction limit which is *really* hard to get around. It's based purely on physics. For a given wavelength and aperture, there's a distance at which the beam will defocus badly due to diffraction effects. -- Leonard Erickson (aka shadow) shadow at shadowgard dot com