How Everything Works
How Everything Works How Everything Works
 

QUESTIONS AND ANSWERS
 
Question 317

I have a friend who refuses to stand in front of the microwave oven in his kitchen, because he feels the "nuclear waves" leak and will cause his sperm to deform (and he doesn't want ugly kids). Is this true? What about car phones? He heard they were bad, too!
Both microwave ovens and car phones emit electromagnetic radiation. But that radiation has relatively long wavelengths (about 12 cm in the case of microwave ovens and about 40 cm in the case of car phones) and is not at all like the electromagnetic waves emitted by nuclear processes. Nuclear electromagnetic radiation, usually called gamma rays, has extremely short wavelengths (less than 0.001 nanometer or about a millionth of the wavelength of visible light). All electromagnetic waves are emitted and absorbed as particles called photons. The energy in a photon is inversely proportional to its wavelength (in vacuum). Gamma rays, with their short wavelengths, have very energetic photons that can do lots of chemical damage to your tissue. But the longer wavelength radiation from microwave ovens and car phones comes as very low energy photons. These photons can't do chemical damage. The only thing those waves can do is heat things. Microwave ovens are carefully shielded so that they keep most of the microwaves inside. If those waves did emerge, they would simply warm your tissue up. This warming won't cause genetic damage but it could cook your tissue. There has been recent concern about low frequency electromagnetic fields causing subtle damage to tissue, but these have not be substantiated by scientific research and no physically reasonable scenarios for how such damage could occur have been offered.
         

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