He later measured the radiation produced when a positron and an electron annihilate each other.

The radiation produces heat and breaks some chemicals down into explosive gases.

But the news that radiation in the river produced fairly high exposures was greeted with a mixture of fascination and dread.

This adaptive radiation produced the first members of the main groups of animals, called phyla.

Already the radiations of Beta's variant-G sun had produced changes in the population.

The almost-unshielded solar radiation here produced mutants of all kinds among man, plants and animals.

The radiation was of ionizing nature, and produced negative oxygen ions (free radicals).

Cosmic radiation will produce secondary neutrons if it hits spacecraft structures.

Long-term radiation had produced many changes, some positive, some not, and some merely cosmetic.

Ultraviolet radiation, the authors suggest, may produce endorphins, which have properties like opioids.