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Fluid water absorbs it very well, but the wavelength for 2.4 GHz is 0.125 m.


Yeah antennas need to resonate, not just absorb. A litre of water wouldn't be a very good antenna at 2.4, but it would warm up due to absorption if it is a trong signal. A vhf antenna might make a terrible antenna at 2.4 as well, but it would also warm up in a strong enough signal. Don't belive me? Shove one in a microwave (please don't really).


“length of a water molecule (at an accuracy of 1 ft)"




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