A nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy

Usage examples of fission.

With the plant critical, the rods only affected coolant temperature, but when the plant was shut down the rods were withdrawn to start the nuclear fission reactions that heated the main coolant water, boiling the water in the steam generators and thereby providing steam to the turbines.

The primary coolant, without the heat input from the nuclear fissions, had cooled to 350 degrees.

New detergent scouring compounds containing phosphorus have the property of collecting and holding rare Earth elements, which are among the most abundant fission products resulting from an atomic blast.

This industrial district had been devoted largely to the production of spaceship equipment which the hyperdrive was making as obsolete as fission power.

They were developments of the original unicellular amoeba, quite large and with a highly-organized nervous system, but still amoeba, with pseudopodia, reproducing by binary fission, and in the main offensive to Terran settlers.

Montpelier, then fissioned in a purposely ugly way in such a way as to create like hellacious amounts of highly poisonous radioactive wastes, which are mixed with heavy water and specially heated-zirconium-piped through special heavily guarded heated zirconium pipes back down to Montpelier as raw materiel for the massive poisons needed for toxic lithiumization and waste-intenseness and annular fusion.

Instead of the fission plants the other Big15 used, Heather went in for hydropower on a colossal scale, damming two-thirds of the watercourses on the Sybraska continent where Rialto was situated.

What mattered as much as the level or duration of exposure was the exact kinds of radionuclides nuclear fission products they had found.

A minute later the radon was in the constriction, and incredible things were happening: radon fusing to transuranian elements, then fissioning immediately.

The fission neutrons leak when subcritical, but when a reactor is critical, the number of fissions is constant since one reaction leads to another.

Yet whatever his remote ancestors might have thought of fission, Gearman loved the piles in his new ships.

By a combination of potassium-argon, fission track, and paleomagnetic dating methods, Johanson determined that Lucy was 3.

I did my postgrad work at call Tech in 1939, there was a lot of talk about the fission results of the Germans.

In fact, the Hmong view of health care seemed to me to be precisely the opposite of the prevailing American one, in which the practice of medicine has fissioned into smaller and smaller subspecialties, with less and less truck between bailiwicks.

To have within my hands the means of reversal was, then, to bear what was inflicted upon us and I did not faint nor did I crumple under these burdens but instead only continued, upward on the ramp, holding hard on the poles that gripped our hands like ropes until finally we came into the place of the vault where we had entered and only then did the halves of us spilt, fission then like mitosis, the beast splitting to parts that were named Ezekiel and Folsom and there we stood, separate once again, looking at one another.