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Samuel Milham, a renowned epidemiologist, recently shared the following:
The Emdex meters don't detect the tire fields, because they filter out the
low frequencies.
Here is the radial tire abstract. The tire companies could easily solve
the problem by using non-magnetic steel wire to make the tires.
Bioelectromagnetics. 1999 Oct;20(7):440-5. Related Articles, Links
Magnetic fields from steel-belted radial tires: implications for
epidemiologic studies.
Magnetic fields emanate from radial tires due to the presence of reinforcing
belts which are made of magnetized steel wire. When these tires spin, they
generate alternating magnetic fields of extremely low frequency (ELF),
usually below 20 Hz. The fundamental frequency of these fields is determined
by tire rotation rate and has a sinusoidal waveform with a high harmonic
content. The static field of radial tires can exceed 500 microT at the
tread, and the tire-generated alternating fields can exceed 2.0 microT at
seat level in the passenger compartment of vehicles. Degaussing the tires
reduces both the static and alternating fields to low levels, but the fields
increase gradually over time after degaussing. The tire-generated fields are
below the frequencies detected by most of the magnetic field meters used in
previous studies of power frequency magnetic field health effects. If these
fields are biologically active, failure to detect them could compromise
exposure assessments associated with epidemiologic studies.
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