2 Mar
2006
2 Mar
'06
3:58 p.m.
On 3/2/06, Eugen Leitl <eugen@leitl.org> wrote:
... Using nanotechnology, particles of copper are inserted into nanotubes, which are ultra-tiny tubes that occur naturally in halloysite clay mined in Utah. Combined with a radio-filtering device that collects phone signals from outside a shielded space, certain transmissions can proceed while others are blocked, the Chicago Tribune reported.
hmm, faraday cage on demand sounds kind of useful. they don't mention the level of attenuation though, and i suspect it's not that great. is anyone else aware of systems that can provide variable rf attenuation on demand?