In physics terms, radiation is simply energy on the move, carried by waves like sunlight or particles like those released by ...

Hence the plethora of radiation dosage graphics. We already posted an excellent one , but here is a second, more artful piece, by David McCandless at Information Is Beautiful .

As I noted earlier, radiation levels at Japan's Fukushima power station have reached 400 millisieverts (mSv) per hour. The chart below (posted by @ gakuranman) helps put this figure into perspective.

The chart above shows how that amount of radiation exposure compares to other exposures, such as from x-rays, CT scans and normal background exposure.

Radiation levels outside the Fukushima power plant remain mostly safe, ... The Best Radiation Chart We’ve Seen So Far. ... people are going to keep on being worried about radiation exposure.