According to this wiki entry radiation has the following effect:
The rate is 1% of HP per 10 rads;
But what does
+2 RADS (as an example, see on the screenshot) stand for? Does it mean, that you get
+2 RADS every second and so you would die after
(10/2)*100 sec? (Example provides that the radiation doesn't change in this time and that you are full-life in the beginning of this experiment.)
I haven't found anything about units regarding this topic.