Page 122field (volts per square metre or Teslas) or a third kind of interference field I shall
describe shortly. Good ones are so easy that even a non-technical person can
use one; usually there is a failsafe display that simply goes “red for danger”
If there is a problem, you may need to get specialist help to correct it.
Take your meter everywhere in the home—and also your office and other hang
outs. There are many sources of exposure:
microwave oven
WiFi phones around the home
Television
Computer
Games consoles
In the old days cathode ray tubes were a significant source of intense radiation
including soft x-rays. But today’s plasma screens are equally hazardous in a
different way, producing dangerous transient spikes which I shall discuss shortly.
One of the worst hazards I used to find was a person’s sleeping place. Often
the night stand is a place where people have a radio and alarm clock, maybe
teamaker and a telephone which may or may not be WiFi. Then there are electric
blankets and waterbeds which may add their own magnetic fields. Even the
metal springs of a mattress may become charged up in the home field, so that
they carry a continuous magnetic flux.
Couple this with the fact that rooms are typically wired with a ring main running
right round the room and which with oscillating current will generate an
intense magnetic field within the ring and you have a formula for danger. It’s
unfortunate that we spend maybe a third of our time lying in this hazardous
bedroom field.
For over 20 years I have also been advocating the fitting of what is called an
EMF demands switch. This is a device which shuts down electrical supply to
the whole house at night when the last equipment and last light are switched
off (except for the refrigerator and freezer, of course). Only when someone
throws a switch to call for light does the device allow the resupply of mains
electricity. But you can go through the night without being surrounded by an
electromagnetic field.