All 9 Uses of

radiation

in

Starship Troopers

You see, it's short on mutations; it does not enjoy Earth's high level of natural radiation.
Chpt 11 *

radiation = particles emitted by nuclear decay (which can cause illness and in very rare cases, desired mutations)

With its evolutionary progress held down almost to zero by lack of radiation and a consequent most unhealthily low mutation rate, native life forms on Sanctuary just haven't had a decent chance to evolve and aren't fit to compete.†
Chpt 11

radiation = particles emitted by nuclear decay

But when types that had evolved on a planet enjoying high radiation and fierce competition were introduced, the native stuff was outclassed.†
Chpt 11

Accepting, of course, the immediate dangers of radiation to themselves in order to provide a proper genetic heritage of mutation for the benefit of their descendants.†
Chpt 11

He says that the genetic impoverishment of distant generations through lack of radiation is something most people are simply incapable of worrying about.†
Chpt 11

That professor type from the Research Station couldn't frighten me with that no radiation scare talk; it seemed to me (from what I could see around me) that the human race had reached its ultimate peak anyhow.†
Chpt 11

If there was that much radiation at the edge, the bottom would no doubt fry your eyeballs.†
Chpt 13

I shifted my radiation counter to directional cascade, took readings on floor and sides — red to multiple red right off the scale, very unhealthy for long exposure even to a man in armor; I estimated its width and depth by helmet range finder, then prowled around and tried to spot openings leading underground.†
Chpt 13

But now I was just one more patient, suffering from nitrous oxide poisoning and overexposure to radiation through being out of armor for over an hour before being retrieved, plus broken ribs and a knock in the head which had put me out of action.†
Chpt 13

Definitions:

(1) (radiation as in: nuclear radiation)
particles emitted by unstable atomic nuclei

Generally, radiation is discussed in terms of harmful levels of radiation that cause sickness. However, there is a normal level of radiation that is not harmful and sometimes radiation is carefully used for beneficial purposes such as medical treatments.
(2) (radiation as in: electromagnetic radiation)
energy sent out as invisible rays such as from heat, light, or radio waves