EMR

Electromagnetic radiation (often abbreviated E-M radiation or EMR) is a phenomenon that takes the form of self-propagating waves in a vacuum or in matter. It comprises electric and magnetic field components, which oscillate in phase perpendicular to each other and perpendicular to the direction of energy propagation.
Electromagnetic radiation is classified into several types according to the frequency of its wave; these types include (in order of increasing frequency and decreasing wavelength): radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays. A small and somewhat variable window of frequencies is sensed by the eyes of various organisms; this is what is called the visible spectrum. The photon is the quantum of the electromagnetic interaction and the basic "unit" of light and all other forms of electromagnetic radiation and is also the force carrier for the electromagnetic force.
[ http://en.wikipedia.org/wiki/Electromagnetic_radiation ]

Electromagnetic Radiation Questionnaire
01. Do you use a cellular or cordless phone?
02. Do you use computers?
03. Do you use Microwave?
04. Do you use wireless technology?
05. Do you feel drained after spending time in front of your computer?
06. Do your children spend hours playing computer games?
07. Is the concentration of your child at school not good?
08. Do you feel that you are sensitive to electronics?
09. Do you suffer from unknown headache?
10. Do you have short-term memory problem?
11. Do you often feel tired?
If you answered yes to some of these questions, you may have electromagnetic radiation.

Electromagnetic Radiation - Out Ouruhia Way
Plain Communications Electromagnetic Radiation Resource Website
Electromagnetic radiation health effects you must know
EMF Safety and Health
Search http://www.merecola.com/ for his articles on electromagnetic radiation.