Microwave absorption in tissue

Why do I have a big microwave absorption in tissue, when the tissue conductivity is high? I thougt the opposite would be correct. Can somebody explain the reason?

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1st define "microwave"! Ever heard of frequency? 2nd who says/writes that absoption is higher in "high" conductivity tissue? – Georg Oct 6 '11 at 10:51
1. For a mircowave with 2 GHz. 2. I can't write who said this. – kame Oct 6 '11 at 11:05
So its just an assumption of You? You should ask if this is right, not for explanation of a wrong assumption. – Georg Oct 6 '11 at 11:18
This is wrong. Aqueous ions are too heavy to move at such high frequencies. Only exeption is H+, but protons are rare in tissue, (living) tissue has to be almost neutral (to be alive). Mechanism of microwave (>1 GHz) absorption is by relaxation of orientational polarisation, very specific for water. – Georg Oct 6 '11 at 11:52
@Georg: Skin is not conductive compared to deep tissue--- you can still electrocute people, because current distributes itself over the whole flesh. The conductivity rises in proportion to the fluid content of the tissue. Also, I find that when I am wrong, it is a good day, because it is when I learn something. – Ron Maimon Oct 12 '11 at 4:51

If you are referring to the microwave Ovens then this might be the possible reason,

Microwave Oven are basically meant to cook food i.e. water rich food. So anything which has a high content of water effectively absorbs microwave radiation and get hot.

EDIT1: for details on how microwave works..here

Now, since tissue contains water the above statements might hold.

NOTE : The Diagram was useless..I realised it much later... :( deleted for everyone's sake..

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Interesting IR/vis/uv spec of ??? (water?) but not relevant at microwave oven frequencies ( about 12 cm wavelength). Did You realize that the spectrum starts at 10 inverse centimeters, which is a frequency measure? – Georg Oct 7 '11 at 12:06
this doesn't answer my question. – kame Oct 9 '11 at 18:10
That diagram is not useless! You might use it in case somebody asks why thick layers of water are blue. – Georg Oct 10 '11 at 9:08
@Georg: I mean for the topic in question... – Vineet Menon Oct 10 '11 at 9:59