Robert Park repeatedly states, in various ways, that electromagnetic radiation we are typically exposed to, such as from cell phones, can not cause cancer because the photons do not carry enough energy to ionize the DNA. (See a couple of examples appended below.) This is a short sighted analysis, but not surprising given that physicists are not necessarily biochemists.

What Park is overlooking is that ionization, the photoelectric effect, is not necessary to damage DNA or other molecules important to life functions. Chemical reactions can be triggered by very small potential differences, and such chemical reactions can result in changes to important molecules, including DNA. Such changes can be effected by ordinary electrochemical means, when electrochemical potentials are in close balance, or via potential triggered ion exchange through membranes, such as across cellular membrane barriers. Nerve dendrites are conductive paths with lengths sufficient to act as antennas for short wavelength EM waves. They can thus resonantly build potentials when EM radiation stimulated, and their membranes can act as barriers through which ions can tunnel to chemically affect molecules on the other side.

The biochemistry involved in potential EM damage is a complex field with large scope. For example see the paper by Peter Kovacic1 and Ratnasamy Somanathan:

http://www.scribd.com/doc/34247981/EMF-Mechanism-Cell-Signaling-Bio- Processes-Toxicity-Radicals

http://tinyurl.com/4ao3rlf


On Apr 24, 2010, at 10:27 AM, Robert Park wrote:

WHAT’S NEW   Robert L. Park   Friday, 23 Apr 10   Washington, DC

1. CELL PHONES: FIVE BILLION ARE IN USE AROUND THE WORLD.
In spite of unsubstantiated reports that cell phone radiation increases
the risk of brain cancer, sales soared in the first decade of the 3rd
Millennium. Cell phones became a $1 trillion business.  There was no
corresponding increase in brain cancer, but perhaps there is a long
latency period. Cancer victims have no way of knowing what caused their cancer, but the media had made their cell phones the suspect. The clear scientific conclusion that cell phone radiation could not be the cause, http://jncl.oxfordjournals.org/cgi/content/full/93/3/166 , went largely
unreported.  In short, microwave photons do not have enough energy to
create a mutant strand of DNA.  That can’t happen until you get to the
blue limit of the visible spectrum. In the interest of full disclosure, let me state that although I own a cell phone I don’t normally carry it,
and can’t even remember my number. I find cell phones to be rude and
intrusive. My wife insists I carry it when I travel so I can dial 911 in
an emergency. That’s OK.

On Jan 1, 2011, at 5:02 AM, Robert Park wrote:


2. PHOTONS: WHAT ALBERT EINSTEIN KNEW ABOUT CELL-PHONE RADIATION.
Maybe I missed it, but I have seen nothing from major media sources
refuting the preposterous claim that radiation from cell phones and other
wireless devices is linked to human health problems.  We are bathed in
microwave radiation. Most of it is as natural as sunshine, but wireless communication, including cell phone radiation, is not. What do we know about the effect of this stuff on the human body, and how long ago did we know it? The starting point is 1905, sometimes called "Albert Einstein's
miracle year." One of the four "miracle" papers he published that year
dealt with the photoelectric effect.  He treated the light striking an
object as particles called quanta, having energy equal to the frequency times the Planck constant. This predicted a photoelectron threshold at the extreme blue end of the visible spectrum, below which there would be no
photoemission.  Almost nobody believed him, including Robert Millikan,
perhaps the world's greatest experimentalist. The photoelectric effect had
already been explained with Maxwell’s wave theory, but experimental
confirmation was lacking. Einstein wasn't bothered; he had other great things to do while waiting for confirmation. Millikan did the experiment in 1917; it agreed perfectly with Einstein's theory. The 1921 Nobel Prize
in Physics was awarded to Einstein for his theory of the photoelectric
effect. Millikan won the Prize two years later. Their results show that
microwaves are great for warming pizza and they don't cause cancer.



Best regards,

Horace Heffner
http://www.mtaonline.net/~hheffner/




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