posted on Oct, 3 2009 @ 03:51 PM
Well - light bulb gives off radiation. In form of light (electromagnetic radiation) . There are a several types of radiation, since it means
capability to produce energy by something and this energy capability to travel through distance (empty or through medium) and be absorbed by something
Microwaves/cell phones emit electromagnetic radiation ,and the frequency range is suspected to cause harm in people. There is probably certain truth
in it,but it is very hard to reach a conclusion. Radars that work in higher frequency range are causing harm to people.
But to find out what does, and what does not - very hard.
Here is a list that might help you:
By the way, there is also ionizing radiation - the "nuclear" stuff.