February 13, 2013
The threshold of danger from electromagnetic radiation can be explained by one
word: frequency. If you want to know the risk of any source, such as smart
meters, find out where it is on the electromagnetic spectrum. Let’s start at the
low end.
Low frequencies aren't dangerous because they don't radiate easily. Power
utilities use 60 hertz on transmission lines, for example. At that frequency,
little power is radiated. It's a good thing; otherwise power would be lost along
the way and never get to its destination. However, power lines can radiate a
small amount of noise at higher frequencies which you can detect on a car radio
as you drive under them.
Mid-range frequencies radiate well but the effect is heat. If the power is low,
as from smart meters, the heat produced is imperceptible. A glowing stove burner
is at a higher frequency (infrared) and at a greater power (up to a thousand
watts) than a smart meter.
Smart meters are in the same microwave region of the EMF spectrum as cell
phones, motion detectors, Wi-Fi, cordless phones and, of course, microwave
ovens. Microwave ovens produce a substantial amount of heating. That's how they
cook food. But as long as the door seal is not damaged, no harmful heating
occurs outside the oven cavity.
Frequencies higher than microwaves and infrared are dangerous because they
produce ionizing radiation. That’s when radiation causes damage to otherwise
healthy tissue that can lead to cancer. These frequencies start in the
ultraviolet range and go up through X rays to Gamma rays. They burn your skin
when you sit in the sun because they break the electron bonds that hold
molecules together.
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Unlike smart meters, the sun radiates frequencies throughout the EMF
spectrum, some of them dangerous and some not. If humans were susceptible to
the dangerous radiation from the sun, we never would have evolved in the
first place. Instead, the sun’s radiation is a mixed blessing: producing
healthy vitamin D and causing skin cancer.
However, there more dangerous sources of radiation in your home than smart
meters. While not one death has been attributed to smart meters, about 3,200
Canadians die annually of radon gas exposure according to a report from
Health Canada. Most of these deaths are due to lung cancer.
The radiation from radon gas is from high energy electrons and helium nuclei
(beta and alpha particles), not high energy photons as in the case of EMF
but the damage to human tissue is from the same ionization.
One the most comprehensive studies on EMF was done by the SCENIHR Committee
of the European Commission (Jan 2009). The 86 page report has been used by
both sides of the smart meter debate. "It is concluded from three
independent lines of evidence (epidemiological, animal and in vitro studies)
that exposure to RF fields is unlikely to lead to an increase in cancer in
humans," say the authors.
Despite the improbability of cancer, the report shows characteristic
scientific caution. "However, as the widespread duration of exposure of
humans to RF fields from mobile phones is shorter than the induction time of
some cancers, further studies are required to identify whether considerably
longer-term (well beyond ten years) human exposure to such phones might pose
some cancer risk."
David Charbonneau is a retired Electronics instructor from Thompson
Rivers University.
He can be reached at
dcharbonneau13@shaw.ca
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