fission


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fission,

in physics: see nuclear energynuclear energy,
the energy stored in the nucleus of an atom and released through fission, fusion, or radioactivity. In these processes a small amount of mass is converted to energy according to the relationship E = mc2, where E is energy, m
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 and nucleusnucleus,
in physics, the extremely dense central core of an atom. The Nature of the Nucleus
Composition

Atomic nuclei are composed of two types of particles, protons and neutrons, which are collectively known as nucleons.
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; see also atomic bombatomic bomb
or A-bomb,
weapon deriving its explosive force from the release of nuclear energy through the fission (splitting) of heavy atomic nuclei. The first atomic bomb was produced at the Los Alamos, N.Mex., laboratory and successfully tested on July 16, 1945.
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.

fission

(fish -ŏn) See nuclear fission.

fission

[′fish·ən]
(biology)
A method of asexual reproduction among bacteria, algae, and protozoans by which the organism splits into two or more parts, each part becoming a complete organism.
(nuclear physics)
The division of an atomic nucleus into parts of comparable mass; usually restricted to heavier nuclei such as isotopes of uranium, plutonium, and thorium. Also known as atomic fission; nuclear fission.

fission

1. Biology a form of asexual reproduction in single-celled animals and plants involving a division into two or more equal parts that develop into new cells
2. short for nuclear fission
References in periodicals archive ?
"We have developed a new design rule for singlet fission materials," said Luis Campos, an associate professor of chemistry and one of three principal investigators on the study.
Moving forward, Fission has the potential to add resources to the R00E and R780E zones and the other three known mineralized zones, continuous exploration investment in the future will assist to prolong the mine life and enhance the project economics.
It does not take much energy to start a fission reaction, and once triggered, the energy released can keep the reaction going.
Past efforts had focused on a few molecules in the material but had oversimplified the process of singlet fission. This study takes a greater view of the material's structure.
Table 4 shows that the deviation of time of maximum fission power is about 1.22%-1.44% for all cases.
Fission Labs hopes to make these early stage ideas a reality and turn Hyderabad into a world class smart city and make it a blue print for other smart initiatives across India.
With the technologies available today, high amounts of energy could be produced only by nuclear reactions, either fission or fusion.
Fission can generate large amounts of radioactive waste, while fusion requires a tremendous amount of energy to get going and control.
Fission Software specialises in master control automation and playout solutions for the media and broadcast industries.
With the Fission Content Management System (CMS), SuperGen has the ability to create, edit, and update an unlimited number of content pages from any computer with internet access at any time.
Time-temperature evolution of the studied samples is defined by a combination of confined (horizontal) track length measurements and determination of the fission track-age of individual apatite grains.
Finally, on Christmas day in 1938, Meitner and Otto Frisch took a famous walk in the snow in Sweden and solved the mystery--the "strange results" were actually the smaller products of uranium splitting, a process that Frisch coined "fission" (borrowing the term from the process of cellular division in biology).