A universal LNB, hot coffee,and black body radiation

[Graham.]

experimenter in the video posts in a tech newsgroup but I thought it might be of interest here.

[Skipweasel]

I'm not convinced - mostly because of a lack of mechanism for the IR radiation to be coherent.

I'd expect it more likely that there's some radiated power from the LNB and that's refelcting off the mug - though why it should reflect better when hot I don't know. The peaks at varied distances would be far easier to explain as constructive inteference between the radiated signal and the received signal - indeed some early proximity fuses, like the VT fuse worked, this way.

[Andy Dingley]

Nice little video, so long as you don't read the "explanation".

[Grimly Curmudgeon]

We were somewhere around Barstow, on the edge of the desert, when the drugs began to take hold. I remember "Graham." saying something like:

Excellent. I wasn't expecting the periodicity of it.

[Andy Burns]

IR? it's microwave. But other than that, the coherence was my comment when it first appeared in another place - the world's cheapest MASER?

[Skipweasel]

Ah. Still - the rest stands.

[Graham.]

Nobody expects a viral contribution.