6 ms·
That's incorrect. The resonant frequency of water is in the THz range. The selection of 2.4 GHz is due to frequency allocation. The Industrial, Science and Medi
by drmpeg 12y ago
That's incorrect. The resonant frequency of water is in the THz range. The selection of 2.4 GHz is due to frequency allocation. The Industrial, Science and Medical (ISM) band is centered on 2.45 GHz. There are also microwave ovens that operate on the next ISM band down in frequency, 915 MHz.
- cnvogel 12y agoThere's not THE resonant frequency of water, there are a lot of them, in different regions of the spectrum, and with different widths, all caused by different mechanism by which water-molecules can interact with electromagnetic waves. http://en.wikipedia.org/wiki/Electromagnetic_absorption_by_water http://en.wikipedia.org/wiki/Electromagnetic_absorption_by_w... And the one responsible for absorption in the ~1GHz region isn't even related to any resonance whatsoever, as it's caused by rearrangements of the unordered electrostatic bindings between the polarized water molecules. There's even more detail at: http://www1.lsbu.ac.uk/water/microwave_water.html http://www1.lsbu.ac.uk/water/microwave_water.html