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ml wrote:
then i think quantum things but even if i expertly understood all these parts, would I have the answers?? You don't need to "think quantum things" about this problem. The discovery of quantum physics was that energy levels aren't continuous. A "system" (whatever it may be) can only have certain levels of energy - in-between energy levels are not allowed. To change between energy level, the system must emit or absorb quanta of energy. Quantum energy E is related to frequency (f, Hz) by E = h*f, where h is Planck's constant = 6.6 x 10^-34 Joule seconds. At 10MHz, the quantum energy is 0.000 000 000 000 000 000 000 000 0066 joules. This is so small that - for all practical purposes - ANY energy level is possible, and quantum effects at radio frequencies are so small they are irrelevant. So quantum physics has just *confirmed* that, at radio frequencies, classical EM physics is all you need to know. hey people thought people like einstein were nutz too and he was smart The question is: are there any Einsteins here? Antennas and transmission lines are home territory for classical EM physics, right in the middle of our map of existing knowledge. There are still lots of interesting new things to be discovered there; but we know in advance that they MUST join up with the existing map, because it surrounds us on every side. Anybody who imagines he's an Einstein, exploring the outer boundaries... is just plain lost. -- 73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek |
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