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Helium-3 (He-3, also written as 3He, see also helion) is a light, non-radioactive isotope of helium with two protons and one neutron (common helium having two protons and two neutrons). [1]

175 relations: Activation product, Alkali metal, Alpha decay, Alpha particle, Aneutronic fusion, Angular momentum, Anno 2205, Anthony James Leggett, Asthma, Atmosphere, Atmosphere of Earth, Atom, BCS theory, Beta decay, Bose–Einstein condensate, Boson, British Interplanetary Society, Caesium, CANDU reactor, Capital (economics), Cavendish Laboratory, Chandrayaan-1, Chemical element, Chinese Academy of Sciences, Chinese Lunar Exploration Program, Chronic obstructive pulmonary disease, Circular polarization, Cold War, Congressional Research Service, Cooper pair, Cosmic ray, Cosmochemistry, Cosmogenic nuclide, Coulomb barrier, Critical point (thermodynamics), Crust (geology), Cryogenics, Cubic metre, Cystic fibrosis, David Lee (physicist), Dense plasma focus, Deuterium, Dilution refrigerator, Douglas Osheroff, Earth, Electric generator, Electricity, Electron, Electronvolt, Electrostatics, ..., Energia (corporation), Energy, Energy development, Exploration of the Moon, Fermion, Fossil fuel, Fusor, Gas, Gas giant, Geiger–Müller tube, Geochemistry, Gram, Gyromagnetic ratio, Hawaiian Islands, Helion (chemistry), Helium, Helium-3 refrigerator, Helium-4, Hotspot (geology), Hydrogen atom, Hyperpolarization (physics), Indian Space Research Organisation, Inertial confinement fusion, Interaction, Interplanetary dust cloud, Investment, Ion, Iron Sky, Isotope, Isotopes of helium, Isotopes of lithium, ITER, Joule per mole, Journal of Low Temperature Physics, Jupiter, Kelvin, Kilowatt hour, Lithium, Luna: New Moon, Magnetic confinement fusion, Mantle (geology), Mark Oliphant, Mid-ocean ridge, Mole (unit), Moon, Moon (film), Morning Star (Brown novel), National Ignition Facility, Natural gas, Nature, Neutron, Neutron detection, Neutron radiation, Nobel Prize in Physics, Nuclear fission product, Nuclear fusion, Nuclear magnetic resonance, Nuclear physics, Nuclear reaction, Nuclear weapon, Nuclear weapons testing, Nucleogenic, Operating cost, Outer space, Ouyang Ziyuan, Parts-per notation, Phase (matter), Phase transition, Phobos (moon), Physical property, Physical Review Letters, Pierce Brown, Planetes, Pollution, Polywell, Power station, Primordial nuclide, Proceedings of the Royal Society, Project Daedalus, Proportional counter, Proton, Proton emission, Pulmonary gas pressures, Quantum mechanics, Radioactive decay, Radionuclide, Red Rising, Regolith, Robert Coleman Richardson, Rubidium, Science fiction, Solar System, Solar wind, Solid-state chemistry, Space Shuttle, Spallation, Spin (physics), Spin polarization, Spodumene, Spontaneous fission, Standard conditions for temperature and pressure, START I, Subduction, Superconductivity, Superfluidity, Tennessee Valley Authority, The Space Review, Thermal energy, Thorium, Tonne, Tritium, Turbine, Unified atomic mass unit, United States Bureau of Mines, United States Department of Energy, United States Department of Homeland Security, United States Department of the Interior, University of Cambridge, Uranium, Uranium-235, Ventilation/perfusion ratio, Watt, Watts Bar Nuclear Generating Station, Wendelstein 7-X, Zero-point energy. Expand index (125 more) »

Activation product

Activation products are materials made radioactive by neutron activation.

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Alkali metal

The alkali metals are a group (column) in the periodic table consisting of the chemical elements lithium (Li), sodium (Na), potassium (K),The symbols Na and K for sodium and potassium are derived from their Latin names, natrium and kalium; these are still the names for the elements in some languages, such as German and Russian.

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Alpha decay

Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and thereby transforms or 'decays' into an atom with a mass number that is reduced by four and an atomic number that is reduced by two.

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Alpha particle

Alpha particles consist of two protons and two neutrons bound together into a particle identical to a helium-4 nucleus.

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Aneutronic fusion

Aneutronic fusion is any form of fusion power in which neutrons carry no more than 1% of the total released energy.

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Angular momentum

In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum.

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Anno 2205

Anno 2205 is a city-building and economic simulation game, with real-time strategy elements, developed by Blue Byte and published by Ubisoft.

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Anthony James Leggett

Sir Anthony James Leggett (born 26 March 1938), has been a professor of physics at the University of Illinois at Urbana-Champaign since 1983.

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Asthma is a common long-term inflammatory disease of the airways of the lungs.

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An atmosphere is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body.

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Atmosphere of Earth

The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity.

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An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.

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BCS theory

BCS theory or Bardeen–Cooper–Schrieffer theory (named after John Bardeen, Leon Cooper, and John Robert Schrieffer) is the first microscopic theory of superconductivity since Heike Kamerlingh Onnes's 1911 discovery.

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Beta decay

In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which a beta ray (fast energetic electron or positron) and a neutrino are emitted from an atomic nucleus.

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Bose–Einstein condensate

A Bose–Einstein condensate (BEC) is a state of matter of a dilute gas of bosons cooled to temperatures very close to absolute zero.

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In quantum mechanics, a boson is a particle that follows Bose–Einstein statistics.

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British Interplanetary Society

The British Interplanetary Society (BIS), founded in Liverpool in 1933 by Philip E. Cleator, is the oldest space advocacy organisation in the world.

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Caesium (British spelling and IUPAC spelling) or cesium (American spelling) is a chemical element with symbol Cs and atomic number 55.

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CANDU reactor

The CANDU, for Canada Deuterium Uranium, is a Canadian pressurized heavy-water reactor design used to generate electric power.

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Capital (economics)

In economics, capital consists of an asset that can enhance one's power to perform economically useful work.

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Cavendish Laboratory

The Cavendish Laboratory is the Department of Physics at the University of Cambridge, and is part of the School of Physical Sciences.

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Chandrayaan-1 (lit: Moon vehicle) was India's first lunar probe.

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Chemical element

A chemical element is a species of atoms having the same number of protons in their atomic nuclei (that is, the same atomic number, or Z).

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Chinese Academy of Sciences

The Chinese Academy of Sciences (CAS), with historical origins in the Academia Sinica during the Republic of China era, is the national academy for the natural sciences of the People's Republic of China (PRC).

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Chinese Lunar Exploration Program

The Chinese Lunar Exploration Program (CLEP), also known as the Chang'e program after the Chinese moon goddess Chang'e, is an ongoing series of robotic Moon missions by the China National Space Administration (CNSA).

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Chronic obstructive pulmonary disease

Chronic obstructive pulmonary disease (COPD) is a type of obstructive lung disease characterized by long-term breathing problems and poor airflow.

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Circular polarization

In electrodynamics, circular polarization of an electromagnetic wave is a polarization state in which, at each point, the electric field of the wave has a constant magnitude but its direction rotates with time at a steady rate in a plane perpendicular to the direction of the wave.

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Cold War

The Cold War was a state of geopolitical tension after World War II between powers in the Eastern Bloc (the Soviet Union and its satellite states) and powers in the Western Bloc (the United States, its NATO allies and others).

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Congressional Research Service

The Congressional Research Service (CRS), known as Congress's think tank, is a public policy research arm of the United States Congress.

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Cooper pair

In condensed matter physics, a Cooper pair or BCS pair is a pair of electrons (or other fermions) bound together at low temperatures in a certain manner first described in 1956 by American physicist Leon Cooper.

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Cosmic ray

Cosmic rays are high-energy radiation, mainly originating outside the Solar System and even from distant galaxies.

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Cosmochemistry (from Greek κόσμος kósmos, "universe" and χημεία khemeía) or chemical cosmology is the study of the chemical composition of matter in the universe and the processes that led to those compositions.

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Cosmogenic nuclide

Cosmogenic nuclides (or cosmogenic isotopes) are rare nuclides (isotopes) created when a high-energy cosmic ray interacts with the nucleus of an in situ Solar System atom, causing nucleons (protons and neutrons) to be expelled from the atom (see cosmic ray spallation).

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Coulomb barrier

The Coulomb barrier, named after Coulomb's law, which is in turn named after physicist Charles-Augustin de Coulomb, is the energy barrier due to electrostatic interaction that two nuclei need to overcome so they can get close enough to undergo a nuclear reaction.

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Critical point (thermodynamics)

In thermodynamics, a critical point (or critical state) is the end point of a phase equilibrium curve.

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Crust (geology)

In geology, the crust is the outermost solid shell of a rocky planet, dwarf planet, or natural satellite.

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In physics, cryogenics is the production and behaviour of materials at very low temperatures.

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Cubic metre

The cubic metre (in British English and international spelling as used by the International Bureau of Weights and Measures) or cubic meter (in American English) is the SI derived unit of volume.

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Cystic fibrosis

Cystic fibrosis (CF) is a genetic disorder that affects mostly the lungs, but also the pancreas, liver, kidneys, and intestine.

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David Lee (physicist)

David Morris Lee (born January 20, 1931) is an American physicist who shared the 1996 Nobel Prize in Physics with Robert C. Richardson and Douglas Osheroff "for their discovery of superfluidity in helium-3.".

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Dense plasma focus

A dense plasma focus (DPF) is a type of plasma device originally developed as a fusion power device starting in the early 1960s.

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Deuterium (or hydrogen-2, symbol or, also known as heavy hydrogen) is one of two stable isotopes of hydrogen (the other being protium, or hydrogen-1).

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Dilution refrigerator

A 3He/4He dilution refrigerator is a cryogenic device that provides continuous cooling to temperatures as low as 2 mK, with no moving parts in the low-temperature region.

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Douglas Osheroff

Douglas Dean Osheroff (born August 1, 1945) is a physicist known for his work in experimental condensed matter physics, in particular for his co-discovery of superfluidity in Helium-3.

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Earth is the third planet from the Sun and the only astronomical object known to harbor life.

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Electric generator

In electricity generation, a generator is a device that converts motive power (mechanical energy) into electrical power for use in an external circuit.

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Electricity is the set of physical phenomena associated with the presence and motion of electric charge.

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The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.

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In physics, the electronvolt (symbol eV, also written electron-volt and electron volt) is a unit of energy equal to approximately joules (symbol J).

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Electrostatics is a branch of physics that studies electric charges at rest.

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Energia (corporation)

PAO S. P. Korolev Rocket and Space Corporation Energia (Raketno-kosmicheskaya korporatsiya “Energiya” im.), also known as RSC Energia (РКК «Энергия», RKK “Energiya”), is a Russian manufacturer of ballistic missile, spacecraft and space station components.

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In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.

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Energy development

Energy development is the field of activities focused on obtaining sources of energy from natural resources.

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Exploration of the Moon

The physical exploration of the Moon began when Luna 2, a space probe launched by the Soviet Union, made an impact on the surface of the Moon on September 14, 1959.

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In particle physics, a fermion is a particle that follows Fermi–Dirac statistics.

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Fossil fuel

A fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing energy originating in ancient photosynthesis.

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A fusor is a device that uses an electric field to heat ions to conditions suitable for nuclear fusion.

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Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma).

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Gas giant

A gas giant is a giant planet composed mainly of hydrogen and helium.

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Geiger–Müller tube

The Geiger–Müller tube or G–M tube is the sensing element of the Geiger counter instrument used for the detection of ionizing radiation.

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Geochemistry is the science that uses the tools and principles of chemistry to explain the mechanisms behind major geological systems such as the Earth's crust and its oceans.

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The gram (alternative spelling: gramme; SI unit symbol: g) (Latin gramma, from Greek γράμμα, grámma) is a metric system unit of mass.

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Gyromagnetic ratio

In physics, the gyromagnetic ratio (also sometimes known as the magnetogyric ratio in other disciplines) of a particle or system is the ratio of its magnetic moment to its angular momentum, and it is often denoted by the symbol γ, gamma.

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Hawaiian Islands

The Hawaiian Islands (Mokupuni o Hawai‘i) are an archipelago of eight major islands, several atolls, numerous smaller islets, and seamounts in the North Pacific Ocean, extending some from the island of Hawaiokinai in the south to northernmost Kure Atoll.

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Helion (chemistry)

A helion is a short name for the naked nucleus of helium, a doubly positively charged helium ion.

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Helium (from lit) is a chemical element with symbol He and atomic number 2.

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Helium-3 refrigerator

A helium-3 refrigerator is a simple device used in experimental physics for obtaining temperatures down to about 0.2 kelvins.

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Helium-4 is a non-radioactive isotope of the element helium.

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Hotspot (geology)

In geology, the places known as hotspots or hot spots are volcanic regions thought to be fed by underlying mantle that is anomalously hot compared with the surrounding mantle.

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Hydrogen atom

A hydrogen atom is an atom of the chemical element hydrogen.

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Hyperpolarization (physics)

Hyperpolarization is the nuclear spin polarization of a material far beyond thermal equilibrium conditions.

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Indian Space Research Organisation

The Indian Space Research Organisation (ISRO) is the space agency of the Government of India headquartered in the city of Bangalore.

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Inertial confinement fusion

Inertial confinement fusion (ICF) is a type of fusion energy research that attempts to initiate nuclear fusion reactions by heating and compressing a fuel target, typically in the form of a pellet that most often contains a mixture of deuterium and tritium.

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Interaction is a kind of action that occur as two or more objects have an effect upon one another.

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Interplanetary dust cloud

The interplanetary dust cloud, or zodiacal cloud, consists of cosmic dust (small particles floating in outer space) that pervades the space between planets in the Solar System and other planetary systems.

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In general, to invest is to allocate money (or sometimes another resource, such as time) in the expectation of some benefit in the future – for example, investment in durable goods, in real estate by the service industry, in factories for manufacturing, in product development, and in research and development.

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An ion is an atom or molecule that has a non-zero net electrical charge (its total number of electrons is not equal to its total number of protons).

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Iron Sky

Iron Sky is a 2012 Finnish-German-Australian comic science fiction action film directed by Timo Vuorensola and written by Johanna Sinisalo and Michael Kalesniko.

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Isotopes are variants of a particular chemical element which differ in neutron number.

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Isotopes of helium

Although there are nine known isotopes of helium (2He) (standard atomic weight), only helium-3 and helium-4 are stable.

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Isotopes of lithium

Naturally occurring lithium (3Li) is composed of two stable isotopes, lithium-6 and lithium-7, with the latter being far more abundant: about 92.5 percent of the atoms.

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ITER (Latin for "the way") is an international nuclear fusion research and engineering megaproject, which will be the world's largest magnetic confinement plasma physics experiment.

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Joule per mole

The joule per mole (symbol: J·mole−1 or J/mol) is an SI derived unit of energy per amount of material.

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Journal of Low Temperature Physics

The Journal of Low Temperature Physics is a biweekly peer-reviewed scientific journal covering the field of low temperature physics and cryogenics, including superconductivity, superfluidity, matter waves, magnetism and electronic properties, active areas in condensed matter physics, and low temperature technology.

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Jupiter is the fifth planet from the Sun and the largest in the Solar System.

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The Kelvin scale is an absolute thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics.

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Kilowatt hour

The kilowatt hour (symbol kWh, kW⋅h or kW h) is a unit of energy equal to 3.6 megajoules.

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Lithium (from lit) is a chemical element with symbol Li and atomic number 3.

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Luna: New Moon

Luna: New Moon is a 2015 science fiction novel by British author Ian McDonald.

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Magnetic confinement fusion

Magnetic confinement fusion is an approach to generate thermonuclear fusion power that uses magnetic fields to confine the hot fusion fuel in the form of a plasma.

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Mantle (geology)

The mantle is a layer inside a terrestrial planet and some other rocky planetary bodies.

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Mark Oliphant

Sir Marcus Laurence Elwin "Mark" Oliphant (8 October 1901 – 14 July 2000) was an Australian physicist and humanitarian who played an important role in the first experimental demonstration of nuclear fusion and also the development of nuclear weapons.

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Mid-ocean ridge

A mid-ocean ridge (MOR) is an underwater mountain system formed by plate tectonics.

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Mole (unit)

The mole, symbol mol, is the SI unit of amount of substance.

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The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite.

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Moon (film)

Moon is a 2009 science fiction film directed by Duncan Jones and written by Nathan Parker from a story by Jones.

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Morning Star (Brown novel)

Morning Star is a 2016 science fiction novel by American author Pierce Brown, the third in his Red Rising trilogy.

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National Ignition Facility

The National Ignition Facility, or NIF, is a large laser-based inertial confinement fusion (ICF) research device, located at the Lawrence Livermore National Laboratory in Livermore, California.

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Natural gas

Natural gas is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, but commonly including varying amounts of other higher alkanes, and sometimes a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium.

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Nature, in the broadest sense, is the natural, physical, or material world or universe.

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| magnetic_moment.

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Neutron detection

Neutron detection is the effective detection of neutrons entering a well-positioned detector.

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Neutron radiation

Neutron radiation is a form of ionizing radiation that presents as free neutrons.

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Nobel Prize in Physics

The Nobel Prize in Physics (Nobelpriset i fysik) is a yearly award given by the Royal Swedish Academy of Sciences for those who conferred the most outstanding contributions for mankind in the field of physics.

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Nuclear fission product

Nuclear fission products are the atomic fragments left after a large atomic nucleus undergoes nuclear fission.

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Nuclear fusion

In nuclear physics, nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles (neutrons or protons).

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Nuclear magnetic resonance

Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a magnetic field absorb and re-emit electromagnetic radiation.

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Nuclear physics

Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions.

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Nuclear reaction

In nuclear physics and nuclear chemistry, a nuclear reaction is semantically considered to be the process in which two nuclei, or else a nucleus of an atom and a subatomic particle (such as a proton, neutron, or high energy electron) from outside the atom, collide to produce one or more nuclides that are different from the nuclide(s) that began the process.

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Nuclear weapon

A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or from a combination of fission and fusion reactions (thermonuclear bomb).

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Nuclear weapons testing

Nuclear weapons tests are experiments carried out to determine the effectiveness, yield, and explosive capability of nuclear weapons.

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A nucleogenic isotope, or nuclide, is one that is produced by a natural terrestrial nuclear reaction, other than a reaction beginning with cosmic rays (the latter nuclides by convention are called by the different term cosmogenic).

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Operating cost

Operating (Operational) costs are the expenses which are related to the operation of a business, or to the operation of a device, component, piece of equipment or facility.

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Outer space

Outer space, or just space, is the expanse that exists beyond the Earth and between celestial bodies.

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Ouyang Ziyuan

Ouyang Ziyuan (born 1935) is a Chinese cosmochemist, geochemist and space advocate.

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Parts-per notation

In science and engineering, the parts-per notation is a set of pseudo-units to describe small values of miscellaneous dimensionless quantities, e.g. mole fraction or mass fraction.

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Phase (matter)

In the physical sciences, a phase is a region of space (a thermodynamic system), throughout which all physical properties of a material are essentially uniform.

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Phase transition

The term phase transition (or phase change) is most commonly used to describe transitions between solid, liquid and gaseous states of matter, and, in rare cases, plasma.

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Phobos (moon)

Phobos (systematic designation) is the innermost and larger of the two natural satellites of Mars, the other being Deimos.

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Physical property

A physical property is any property that is measurable, whose value describes a state of a physical system.

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Physical Review Letters

Physical Review Letters (PRL), established in 1958, is a peer-reviewed, scientific journal that is published 52 times per year by the American Physical Society.

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Pierce Brown

Pierce Brown is an American science fiction author and screenwriter known best for his Red Rising series, consisting of Red Rising (2014), Golden Son (2015), Morning Star (2016), Iron Gold (2018) and Dark Age (2019).

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is a Japanese hard science fiction manga written and illustrated by Makoto Yukimura.

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Pollution is the introduction of contaminants into the natural environment that cause adverse change.

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The polywell is a type of nuclear fusion reactor that uses an electric field to heat ions to fusion conditions.

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Power station

A power station, also referred to as a power plant or powerhouse and sometimes generating station or generating plant, is an industrial facility for the generation of electric power.

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Primordial nuclide

In geochemistry, geophysics and geonuclear physics, primordial nuclides, also known as primordial isotopes, are nuclides found on Earth that have existed in their current form since before Earth was formed.

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Proceedings of the Royal Society

Proceedings of the Royal Society is the parent title of two scientific journals published by the Royal Society.

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Project Daedalus

Project Daedalus was a study conducted between 1973 and 1978 by the British Interplanetary Society to design a plausible unmanned interstellar spacecraft.

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Proportional counter

The proportional counter is a type of gaseous ionization detector device used to measure particles of ionizing radiation.

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| magnetic_moment.

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Proton emission

Proton emission (also known as proton radioactivity) is a rare type of radioactive decay in which a proton is ejected from a nucleus.

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Pulmonary gas pressures

The factors that determine the values for alveolar pO2 and pCO2 are.

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Quantum mechanics

Quantum mechanics (QM; also known as quantum physics, quantum theory, the wave mechanical model, or matrix mechanics), including quantum field theory, is a fundamental theory in physics which describes nature at the smallest scales of energy levels of atoms and subatomic particles.

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Radioactive decay

Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy (in terms of mass in its rest frame) by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, gamma ray, or electron in the case of internal conversion.

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A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is an atom that has excess nuclear energy, making it unstable.

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Red Rising

Red Rising is a 2014 science fiction novel by American author Pierce Brown, and the first book and eponym of a trilogy.

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Regolith is a layer of loose, heterogeneous superficial deposits covering solid rock.

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Robert Coleman Richardson

Robert Coleman Richardson (June 26, 1937 – February 19, 2013) was an American experimental physicist whose area of research included sub-millikelvin temperature studies of helium-3.

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Rubidium is a chemical element with symbol Rb and atomic number 37.

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Science fiction

Science fiction (often shortened to Sci-Fi or SF) is a genre of speculative fiction, typically dealing with imaginative concepts such as advanced science and technology, spaceflight, time travel, and extraterrestrial life.

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Solar System

The Solar SystemCapitalization of the name varies.

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Solar wind

The solar wind is a stream of charged particles released from the upper atmosphere of the Sun, called the corona.

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Solid-state chemistry

Solid-state chemistry, also sometimes referred to as materials chemistry, is the study of the synthesis, structure, and properties of solid phase materials, particularly, but not necessarily exclusively of, non-molecular solids.

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Space Shuttle

The Space Shuttle was a partially reusable low Earth orbital spacecraft system operated by the U.S. National Aeronautics and Space Administration (NASA), as part of the Space Shuttle program.

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Spallation is a process in which fragments of material (spall) are ejected from a body due to impact or stress.

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Spin (physics)

In quantum mechanics and particle physics, spin is an intrinsic form of angular momentum carried by elementary particles, composite particles (hadrons), and atomic nuclei.

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Spin polarization

Spin polarization is the degree to which the spin, i.e., the intrinsic angular momentum of elementary particles, is aligned with a given direction.

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Spodumene is a pyroxene mineral consisting of lithium aluminium inosilicate, LiAl(SiO3)2, and is a source of lithium.

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Spontaneous fission

Spontaneous fission (SF) is a form of radioactive decay that is found only in very heavy chemical elements.

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Standard conditions for temperature and pressure

Standard conditions for temperature and pressure are standard sets of conditions for experimental measurements to be established to allow comparisons to be made between different sets of data.

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START (Strategic Arms Reduction Treaty) was a bilateral treaty between the United States of America and the Union of Soviet Socialist Republics (USSR) on the reduction and limitation of strategic offensive arms.

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Subduction is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced or sinks due to gravity into the mantle.

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Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic flux fields occurring in certain materials, called superconductors, when cooled below a characteristic critical temperature.

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Superfluidity is the characteristic property of a fluid with zero viscosity which therefore flows without loss of kinetic energy.

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Tennessee Valley Authority

The Tennessee Valley Authority (TVA) is a federally owned corporation in the United States created by congressional charter on May 18, 1933, to provide navigation, flood control, electricity generation, fertilizer manufacturing, and economic development to the Tennessee Valley, a region particularly affected by the Great Depression.

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The Space Review

The Space Review is a free online publication, published weekly with in-depth articles, essays, commentary and reviews on space exploration and development.

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Thermal energy

Thermal energy is a term used loosely as a synonym for more rigorously-defined thermodynamic quantities such as the internal energy of a system; heat or sensible heat, which are defined as types of transfer of energy (as is work); or for the characteristic energy of a degree of freedom in a thermal system kT, where T is temperature and k is the Boltzmann constant.

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Thorium is a weakly radioactive metallic chemical element with symbol Th and atomic number 90.

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The tonne (Non-SI unit, symbol: t), commonly referred to as the metric ton in the United States, is a non-SI metric unit of mass equal to 1,000 kilograms;.

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Tritium (or; symbol or, also known as hydrogen-3) is a radioactive isotope of hydrogen.

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A turbine (from the Latin turbo, a vortex, related to the Greek τύρβη, tyrbē, meaning "turbulence") is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work.

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Unified atomic mass unit

The unified atomic mass unit or dalton (symbol: u, or Da) is a standard unit of mass that quantifies mass on an atomic or molecular scale (atomic mass).

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United States Bureau of Mines

For most of the 20th century, the United States Bureau of Mines (USBM) was the primary United States government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.

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United States Department of Energy

The United States Department of Energy (DOE) is a cabinet-level department of the United States Government concerned with the United States' policies regarding energy and safety in handling nuclear material.

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United States Department of Homeland Security

The United States Department of Homeland Security (DHS) is a cabinet department of the United States federal government with responsibilities in public security, roughly comparable to the interior or home ministries of other countries.

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United States Department of the Interior

The United States Department of the Interior (DOI) is the United States federal executive department of the U.S. government responsible for the management and conservation of most federal lands and natural resources, and the administration of programs relating to Native Americans, Alaska Natives, Native Hawaiians, territorial affairs, and insular areas of the United States.

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University of Cambridge

The University of Cambridge (informally Cambridge University)The corporate title of the university is The Chancellor, Masters, and Scholars of the University of Cambridge.

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Uranium is a chemical element with symbol U and atomic number 92.

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Uranium-235 (235U) is an isotope of uranium making up about 0.72% of natural uranium.

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Ventilation/perfusion ratio

In respiratory physiology, the ventilation/perfusion ratio (V̇/Q̇ ratio or V/Q ratio) is a ratio used to assess the efficiency and adequacy of the matching of two variables.

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The watt (symbol: W) is a unit of power.

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Watts Bar Nuclear Generating Station

The Watts Bar Nuclear Power Plant is a Tennessee Valley Authority (TVA) nuclear reactor pair used for electric power generation.

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Wendelstein 7-X

The Wendelstein 7-X (W7-X) reactor is an experimental stellarator (nuclear fusion reactor) built in Greifswald, Germany, by the Max Planck Institute of Plasma Physics (IPP), and completed in October 2015.

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Zero-point energy

Zero-point energy (ZPE) or ground state energy is the lowest possible energy that a quantum mechanical system may have.

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Redirects here:

3He, 3he, He 3, He III, He-3, He3, Helium 3, Helium III, Helium on the moon, Helium3, Tralphium.


[1] https://en.wikipedia.org/wiki/Helium-3

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