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Use a laptop as a mobile wireless power meter
Authored by: barko192 on Apr 08, '10 07:43:30PM

Just because EMR is in the microwave band, doesn't mean it will warm food. The 2.4 GHz and 5 GHz frequencies that wireless routers operate on are actually in the microwave band of 300 MHz to 300 GHz, the microwave band is a subset of the radio band of 3 kHz to 300 GHz.

Only microwaves of a specific frequency warm food, because the energy per microwave photon corresponds to a ro-vibronic energy transition in the water molecule.

For more info check out: http://en.wikipedia.org/wiki/Microwave_oven



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Use a laptop as a mobile wireless power meter
Authored by: ALT147 on Apr 11, '10 03:51:26PM
Only microwaves of a specific frequency warm food, because the energy per microwave photon corresponds to a ro-vibronic energy transition in the water molecule.
In fact, microwaves of anywhere from 1 GHz to a few hundred GHz will warm food. See this page for far too much detail. I just thought it odd that the frequency of a microwave oven coincided with channels 7, 8 and 9 of the 802.11 standard. Even though the power levels may be way too low to heat anything (or anyone), surely you'd choose a band far away from any commonplace, powerful source like a microwave oven for the sake of interference?

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