How does man use radioactivity? NUCLEAR WEAPON EXPERTS ANSWER THIS!?
There are several types of radioactivity, each with its own use. Radioactivity is very very useful, and in the right cases it can be reasonably safe. I’ll give one example for each. Alpha rays are basically an ionized helium nucleus. Alpha rays are not very penetrating, and will not pass through more than a few cm of air. An example of use of this type of material is a smoke detector (it uses americium 241) http://home.howstuffworks.com/home-impro… Beta rays are high-energy electrons and can travel a bit further. I suppose these can be used in treating cancers. I can’t find a decent website in a reasonable time, but they basically shoot a beam of beta rays into your body the cancer. Next, they move the beam and repeat. They keep doing this until the overlapping area of high dosage is only the cancer; the surrounding tissue is exposed to minimal amounts of radaiation Gamma rays a
