Key facts about "The Black Rain"
In the words of Bert the Turtle...
What is nuclear fallout?
Nuclear Fallout (or simply fallout), also known as Black Rain, is the residual radioactive material propelled into the upper atmosphere following a nuclear blast or a nuclear reaction conducted in an unshielded facility. It's name comes from the action of it actually "falls out" of the sky after the explosion and shock wave have passed. It commonly refers to the radioactive dust and ash created when a their is a nuclear explodes.
This radioactive dust, consisting of material either directly vaporized by a nuclear blast or charged by exposure, is a highly dangerous kind of radioactive contamination.
Some of the biggest causes of Fallout...
How bad is it?...
NUCLEAR FALLOUT- TESTING
This article talks about the long term effects of fallout.
New York City Example
This collection of slides explains an example of a 150Kt bomb going off in New York City.