The unseen pollution

It’s interesting how our different senses are tuned to respond to different frequencies. Touch, of course, can sense random pressures up to about 60 cycles per second. Anyone who has ever grabbed hold of a live electrical wire can attest to this. Beyond this point, the individual touches tend to blend together and the pressure sensation seems constant.
At about this same frequency range, our ears take over. 20 cycles per second to 20,000 cycles per second is the generally accepted range of hearing. Above this, some animals can hear but humans cannot. Radio and television broadcast in the range of 50 million to 1 billion cycles per second and that is far above the range of our ears. Otherwise, this would be a noisy place indeed. Radar and microwaves take up the next segment of the spectrum. They begin at about 1 Billion cycles per second and top off around 50 Billion.

There is a large spectrum of frequencies between what our ears can perceive and where our eyes take over. Our eyes perceive a relatively small band of frequencies centered around 1,000 trillion cycles per second. We begin to see light in the Red range and our sight gives out in the Violet range. Frequencies below and above this small bandwidth are “Infra Red” and “Ultra Violet” respectively. Above this are the ever useful X-rays at about 500,000 trillion cycles per second and Gamma rays that top out in the range of 50 billion, billion cycles per second.

Where is all this going? I don’t know. I was just thinking about the amount of electromagnetic radiation we are subjected to every day and got off on a tangent. I know that I live in range of hundreds of radio stations and many, many airports that all have radar units, and there are microwave relay stations everywhere. As if this were not bad enough, there are policemen who are dedicated to our safety that are pointing radar guns directly at us and we all have cell phones that are blasting their radiation into our brains at close range!! Are we all being slowly cooked by all this radiation, like the food in our microwaves? And what about those microwave ovens? Are they really safe? How about the 60 cycle per second radiation that delivers the electricity to our homes and is in our walls. Is it safe? Heaven forbid if we should live under some of the high power lines that traverse our country.

It is a well known fact that electromagnetic radiation penetrates most things quite easily and cannot be effectively shielded. Otherwise, we would not be able to hear radios in our homes. Only very dense materials, such as lead, can shield against this radiation, and it has to be very thick to be effective. Do you have a lead door on your microwave? Not!

One way to get around this problem is to re-direct this radiation. If you look closely at your microwave oven door, you will see a fine grid. This grid is on all six sides of the oven, and is designed to reflect the microwave radiation back into the interior until it is absorbed by the food you are heating, but how well does it really work?

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