A thermal invisibility cloak actively redirects heat

[Panich52]

Science Daily

A thermal invisibility cloak actively redirects heat

Light, sound, and now, heat -- just as optical invisibility cloaks can bend and diffract light to shield an object from sight, and specially fabricated acoustic metamaterials can hide an object from sound waves, a recently developed thermal cloak can render an object thermally invisible by actively redirecting incident heat.

http://www.sciencedaily.com/releases/2015/09/150921112729.htm

[Erich Bloodaxe BSN]

1. Depending on how low they can get production costs, that will be one

a lot of people will be interested in having automatically built into the walls of new homes to thwart law enforcement tools that let them spy on people inside the homes through the walls.

[miyazaki]

2. Type II & III civilizations come to mind in cloaking their very existance. n/t