wrote in message
...
depends on the radiation
alpha is stopped by paper
beta is stopped by aluminum foil
gamma is stopped by lead

http://puregold.aquaria.net/su1-2004...radiation.html
snip

Sure. But my point is that there is a difference between being made
radioactive, and be irradiated. You can blast a steak with gamma rays,
killing all the cow poop, but if you eat the steak you won't become
radioactive. If on the other hand you poured the green goo from a reactor on
your burger, you'll be able to read in the dark.

BV.