Wavelengths Exposures Harmful?

I think you should learn the definition of radiation and wavelength.

Take the spectrum of em background and do an energy per area calculation. It's sufficient to do a log scale, just 1 kHz, 10 kHz, 100 kHz, etc. It'll make an interesting graph and you'll immediately grasp the insignificance of the lower frequency stuff. It may make you paranoid about Quasars, but that's another story for another day.

Thanks all gurus out there for your great answers that educated someone like me on these kind of curiosity questions. You helped us be better and more understanding of thing around us. Again thank you

Download and read the EMC standards, you will find just how harmful they are and can be, the future electrical regulation in the UK (BS7671) will take account of this in the next coming, as they believe there is a link between mains frequency electromagnetic fields and the body's response to melamine( i think) production, they have already set levels for reasonable amounts in varying situations but as yet all cabling issues and equipment in the field will probably fail any such levels put forward especially in industry when eventually tested, some companies that are large enough coca cola etc do have E.M surveys to protect equipment and people. this will lead to different electrical designs in buildings and more maths and science for the common electrician so be prepared to learn.

P.S it can take a little while to read but it is very interesting, i don't read novels (my opinion)

Run! Run! Run to the store and buy some tinfoil before that dastardly LynLynch corners the market (like an EMI challenged Bunky Hunt) and quadruples the price!