Cinorjer said:
You see, 'electromagnetism' is just a fancy word for 'heat' rays. Anything that gives off heat penetrates you with cancer causing EM rays, usually in infrared frequency. Heat pads, hot water bottles, the sun, even a lightbulb. So the electric blanket does too
I'll have to call you on this one. The heat from an electric blanket would be in the infrared light region, wayyyyy different from the microwaves or xray frequencies that are known to actually cause damage to human tissue in large enough doses. It is, in once sense, all energy, but I don't think people should worry about their fireplace log sending out electromagnetic waves.
Youck! And I will have to call you both.
Some of the heat from an electric blanket is in the form of heat rays, or infra-red radiation (the rest is transferred by conduction of heat), and these are indeed exactly the same as from any other heat-source. And they are electromagnetic waves. They are, however, not a part of the EM spectrum that has yet been suspected of causing cancer.
The concern about electric blankets comes from another source: To heat the blanket, an AC current (from your AC outlet) is passed through wires inside the blanket. This 50 or 60HZ current generates a low-frequency electromagnetic field in the immidiate vicinity of the blanket, and as you will obviously have the blanket close to your body, you will be subjected to the field.
All household appliances emit such fields, but few other appliances are wrapped close to your body for hours on a regular basis. So the concern is, in principle, real enough. However, as mentioned, no tests have been able to link such fields conclusively to cancer risks. So even if such a link does exist, the added risk is obviously very small, and will probably have less impact on your health that repeated exposure to cold nights.
When using electric blankets, I would be much more concerned about fire hazards, overheating, and electric shock; I would make sure that my blanket was equipped with the appropriate safety devices, was dry and in good overall shape. If such a blanket gets even slightly worn or damaged, it should be replaced.
Hans