Researchers have shown off a microwave-emitting version of the laser, called a maser, that works at room temperature.
Masers were invented before the laser, but have languished in obscurity because they required high magnetic fields and difficult cooling schemes.
A report in Nature outlines a far simpler version using a crystalline material and no cooling or magnets.
http://www.bbc.co.uk...onment-19281566
Reminds me of a story I wrote several years ago....
I'll never have another idea.
I swear.
I swear by everything I've been through.
I'll never have another idea as long as I live.
http://themediadesk....les5/weapon.htm