19 years old (when this video was made) Eric Jacqmain, from Indiana in the US, covered an ordinary fibreglass satellite dish with 5,800 tiny mirror tiles to make his 'very own death ray'.
Watch this lad cut an aluminium tin can in half with this crazy weapon, "You're dead, as long as you let him get within 40 inches of you." LOL.
As it stands, it's not a totally utilitarian 'Death Ray', unless your enemy puts his head at the focal point of it.
BUT ... it is a totally useful FREE ENERGY machine. What would be the most efficient way to harness the immense heat generated at the focal point of that old (mirror-tile covered) satellite dish, I mean other than cooking sausages and boiling water?
And doesn't this suddenly a) bring local energy generation to the masses and b) reinvigorate the parabolic satellite dish market?