/sci/ - Science & Math

>>12774407
>To cut fallout gamma rays by half 0.5 inches of lead is equal to 0.7 inches of steel, or 2.2 inches of concrete, or 3.3 inches of earth.
This is pretty good, but I think my real issue is not knowing how much radiation there is in any given region of space. Increasing thickness by X amount reduces the radiation by half, but if I don't have any idea how much radiation there is to begin with then it doesn't mean dick.