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"Szczepan Bialek" wrote in message
... The Giants discovered in XIX century that light is the oscillatory flow of electrons. In XX century was done the first rectenna: "A rectenna is a rectifying antenna, a special type of antenna that is used to convert microwave energy into direct current electricity. " In XXI century are the optical rectennas. But the first were the crystal radio: "The simplest crystal radio receiver, employing an antenna and a demodulating diode (rectifier), is actually a rectenna". From: http://en.wikipedia.org/wiki/Rectenna You wrote "latest theories that support the latest experiments are the best "knowledge" that we have so far". But there are plenty of theories. Which one is the best? To have knowledge means know the facts not theories. S* Oh dear! The Wiki page tells us that a rectenna converts microwave energy then says, inconsistently, that crystal radios (which operate on MW and LW) are rectennas. I think the rectenna was mentioned by Szczepan several months ago - are we going around the loop once more? Is it worth commenting about scientific method, theory and fact? I'll say that reading Szczepan's postings makes a good spectator sport. 73, Ian. |
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