Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. A doughnut-shaped chamber used in fusion research in which a plasma is heated and confined by magnetic fields.
Wiktionary
- n. A toroidal chamber in which a plasma is magnetically confined; used in nuclear fusion research.
WordNet 3.0
- n. a doughnut-shaped chamber used in fusion research; a plasma is heated and confined in a magnetic bottle
Etymologies
- A transliteration of Russian токамак, an acronym of тороидальная камера в магнитных катушках (toroidal chamber with magnetic coils). (Wiktionary)
- Russian, from to(roidal'naya) kam(era s) ak(sial'nym magnitnym polem), toroidal chamber with axial magnetic field. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“The word tokamak means "toroidal chamber" in Russian.”
“The CFNS is based on a tokamak, which is a machine with a "magnetic bottle" that is highly successful in confining high temperature more than 100 million°C fusion plasmas for sufficiently long times.”
“A tokamak is a doughnut-shaped vessel in which researchers use powerful magnet fields to squeeze and heat a plasma of hydrogen isotopes until the nuclei fuse together forming helium and releasing large amounts of heat.”
“Nuclear fusion entails forcing together the nuclei of light atomic elements in a super-heated plasma, held in a doughnut-shaped chamber called a tokamak, so that they make heavier elements and in so doing release energy.”
“A tokamak, which is what ITER will be, is basically a D-shaped car tire.”
“The CFNS is based on a tokamak, which is a machine with a "magnetic bottle" that is highly successful in confining high temperature (more than 100 million degrees Celsius) fusion plasmas for sufficiently long times.”
“Further upgrades will lead to studies on the physics and control of high-performance plasmas to improve the future operation of ITER - an international project to design and build an experimental fusion reactor based on the 'tokamak' concept.”
“The magnetic-confinement fusion programme's objectives are to obtain and study conditions approaching those needed in a power plant using the 'tokamak' machine concept - effectively a magnetic bottle that contains the hot plasma.”
“Laser efficiencies are far too low, and pulsed-power systems can't maintain the repetition rates for continuous power generation. 2018 for tokamak fusion is also on the optimistic side.”
“For the past three decades, PPPL has been a leader in magnetic confinement experiments utilizing the tokamak approach.”
Lists
These user-created lists contain the word ‘tokamak’.
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science fact or fiction
pretty open-ended here—terms, ideas, lingo, technologies and phenomena (real or postulated) that are, were, should be or could be used in speculative fiction
tachyon, mecha, dropship, wetware, meatspace, nanobot, cloned meat, asteroid mining, hyperdrive, wormhole, parallel universe, distributed intel... and 464 more...
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250 Spelling Words
A selected sampling of words for intermediate and advanced spellers.
orecchiette, rhabdomancy, guayabera, orthoepy, opisthenar, maguey, proem, ciabatta, cioppino, banns, concinnity, asthenia and 237 more...
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*CVk
...where C is any consonant and V is any vowel.
trek, flak, anorak, fartlek, lek, beatnik, realpolitik, amok, mukluk, Wordnik, springbok, kulak and 3 more...
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Alternative energy concepts
Words that are becoming more important as we learn more about alternative and renewable energy sources.
microreactors, fuel cell, biomass, biofuel, algae, fission, fusion, turbine, hydrogen, solar, photovoltaic, solar thermal and 47 more...
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Random
These are just some random words that I might find a list for someday.
troglodytism, chinkle, vasculum, sabz, cucullus, tricornigerous, cuboctahedron, eruca, gamp, pilum, taha, angelhood and 244 more...
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aozuas's Words
sense data, hyperreality, brouhaha, ibid, apophenia, fnord, lackadaisical, schadenfreude, bildungsroman, ready-made, readymade, tergiversar and 654 more...
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Words I rather like
Words herein are those that I like somewhat.
prestidigitation, splendid, badger, custody, adjustable, huzzah, artillery, heavy, quincunx, brummagem, crapulous, fuselage and 20 more...
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Slavic Languages Spelling Bee List
need to learn these words!!!!!!!!!!!!!!!!!!!
gulag, robot, troika, siberian, kishke, sable, polka, sputnik, babushka, gopak, trepak, baba and 40 more...
Tweets
Looking for tweets for tokamak.
ruzuzu "ITER is based on the 'tokamak' concept of magnetic confinement, in which the plasma is contained in a doughnut-shaped vacuum vessel. The fuel—a mixture of Deuterium and Tritium, two isotopes of Hydrogen—is heated to temperatures in excess of 150 million°C, forming a hot plasma. Strong magnetic fields are used to keep the plasma away from the walls; these are produced by superconducting coils surrounding the vessel, and by an electrical current driven through the plasma."
--from http://www.iter.org/mach Jan 19, 2012
crunchysaviour Toroidal'naya kamera s magnitnymi katushkami, accorting to Wikipedia.
This is a truly beautiful device. The torus is a recurring shape in nature. I think our own inventions will ultimately follow, ever more closely, the shapes and forms of nature's, and be better for it. Aug 26, 2008