Water is conductive and thus can receive radiation. The electrons are
not totally bound to the molecule meaning water is a weak plasma. I am
interested in knowing what the plasma frequency is for water,
empirically or from calculations.
Plasma frequency=omega=(4*pi*n*e^2/me)^0.5

Hi, thank you for submitting your question to Answers.Google, I hope I
can provide the information you are seeking.

The plasma frequency of water (h-2-o) is Z(0), between 9 and 10 Hertz
(cycles per second.)

See pages 63 and 64 of 

?About Strange Effects Related to Rotating
Magnetic Systems?, M. Pitk¨anen
Dept. of Physics, University of Helsinki, Helsinki, Finland.
Email: matpitka@rock.helsinki.fi.
http://www.physics.helsinki.fi/?matpitka/.

http://www.physics.helsinki.fi/~matpitka/faraday.pdf

and

?Hutchison effect and classical Z0 force?
Matti Pitk¨anen
Kadermonkatu 16, 10900, Hanko, Finland
E-mail matpitka@rock.helsinki.fi
March 8, 2004

Search term for scholar.google.com: plasma frequency of water

http://scholar.google.com/scholar?q=%22plasma+frequency+of+water%22&ie=UTF-8&oe=UTF-8&hl=en&btnG=Search


Definition of empirical, google search term: define:empirical

based on experience or observational information and not necessarily
on proven scientific data. In the past, vaccine trials have been
performed based exclusively on empirical data and without a full
understanding of the disease processes or correlates of immunity.
www.niaid.nih.gov/factsheets/GLOSSARY.htm

Thank you again for turning to Answers.Google for help. If I
understood your question as intended, I believe 10 Hz. is the
empirical answer you were requesting.