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Krypton

Index Krypton

Krypton (from translit "the hidden one") is a chemical element with symbol Kr and atomic number 36. [1]

223 relations: Abundances of the elements (data page), Acentric factor, Air separation, Airborne particulate radioactivity monitoring, Ajka, Alkali metal, Alkaline earth metal, Allende meteorite, Amchitka, Argon, Argon compounds, Argon flash, Arundel Gardens, Atmosphere of Jupiter, Atmospheric chemistry, Atomic radii of the elements (data page), Atomic radius, Ausonium, Autonomous building, Behavior of nuclear fuel during a reactor accident, Beta attenuation monitoring, Boiling points of the elements (data page), Bottled gas, Bromine, Buffer gas, Cadmium, Characterization of nanoparticles, Chemistry, Chemistry: A Volatile History, Chernobyl disaster, Comet Hale–Bopp, Compounds of fluorine, Compounds of oxygen, Conservation and restoration of neon objects, Cosmogenic nuclide, CPK coloring, Critical point (thermodynamics), Critical points of the elements (data page), Curtain wall (architecture), D-block contraction, Dakota Gasification Company, Densities of the elements (data page), Diatomic molecule, Egon Orowan, Electron affinity (data page), Electron configuration, Electron configurations of the elements (data page), Electron shell, Electronegativities of the elements (data page), Endohedral fullerene, ..., Energy conversion efficiency, Excimer laser, Experimental Breeder Reactor II, Fission products (by element), Flashlight, Flashtube, Flerovium, Flibe Energy, Fluorescent lamp, Fluoride volatility, Fluorine, Gas, Gas composition, Gas-discharge lamp, Gas-filled tube, George Samuel Hurst, Glossary of chemistry terms, Group 12 element, Hall-effect thruster, Halogen lamp, Hassium, Heat capacities of the elements (data page), Heat capacity ratio, Heats of fusion of the elements (data page), Heats of vaporization of the elements (data page), Heavy metals, Hermetic seal, Hesperium, History of chemistry, History of mass spectrometry, History of the metre, Hydride, Ice core, Imre Bródy, Incandescent light bulb, Index of chemistry articles, Indium, Industrial gas, Inhalational anaesthetic, Inorganic compounds by element, Insulated glazing, Ion beam, Ion laser, Ionization energies of the elements (data page), Isotopes of krypton, Isotopes of selenium, Jacques Babinet, Kilogram, Kinetic diameter, KR, Krypton (comics), Krypton (disambiguation), Krypton difluoride, Krypton fluoride laser, Krypton-85, Kryptonium ion, Krytron, Laser beam welding, Laser construction, Laser light show (Grand Coulee Dam), Laser projector, Laser pumping, Laurence Wyman, Liquid fluoride thorium reactor, Lise Meitner, List of acronyms: K, List of chemical element name etymologies, List of chemical elements, List of elements by atomic properties, List of elements by stability of isotopes, List of English inventions and discoveries, List of fusion experiments, List of gases, List of MeSH codes (D01), List of oxidation states of the elements, List of refrigerants, List of UN numbers 1001 to 1100, List of UN numbers 1901 to 2000, List of vacuum tubes, List of world production, Livermorium, Lucia V. Streng, Magic number (physics), Maglite, Mass Spectrometer for Planetary Exploration, Matrix isolation, Mössbauer spectroscopy, Melting points of the elements (data page), Mercury (planet), Metre, Metre Convention, Molar ionization energies of the elements, Molière radius, Molten-Salt Reactor Experiment, Monatomic gas, Morris Travers, Nanoclusters, Nd:YAG laser, Neon, Neon lamp, Neon sign, NFPA 704, Nitrogen clathrate, Nitrogen narcosis, Noble gas, Noble gas (data page), Noble gas compound, Nonmetal, Nuclear binding energy, Nuclear fuel, Nuclear medicine, Nuclear pumped laser, Nuclear reactor safety system, Oganesson, Onium compound, Open shell, Optoelectric nuclear battery, Orders of magnitude (specific heat capacity), Pakistan Atomic Research Reactor, Passive house, Pattipati Ramaiah Naidu, Period (periodic table), Period 4 element, Periodic table (electron configurations), Plasma globe, Plutonium, Pressure-induced hydration, Prices of elements and their compounds, Project Grab Bag, Proton affinity (data page), Proton-transfer-reaction mass spectrometry, Pulsed discharge ionization detector, Radiopharmaceutical, Replacement window, Robert Smolańczuk, Rockne Krebs, Roles of chemical elements, S-process, Science and technology in Hungary, Scintillator, Soviet submarine K-27, Space Solar Power Exploratory Research and Technology program, Speeds of sound of the elements (data page), Spent nuclear fuel, Stable salt reactor, Superboy (Kon-El), TEA laser, The Elements (song), Thermal conductivities of the elements (data page), Thermal conductivity, Three Mile Island Nuclear Generating Station, Timeline of chemical element discoveries, Triple point, Trivial name, Tungsram, Turboexpander, Underground nuclear weapons testing, Unison Industries, University College London, Uranium-235, Valley of stability, Van der Waals constants (data page), Vapor pressures of the elements (data page), William Hampson, William Ramsay, Window, Xenon, Xenon monochloride, Xenon-135, 1890s, 1898 in science, 1898 in the United Kingdom, 36 (number). Expand index (173 more) »

Abundances of the elements (data page)

No description.

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Acentric factor

The acentric factor \omega is a conceptual number introduced by Kenneth Pitzer in 1955, proven to be very useful in the description of matter.

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Air separation

An air separation plant separates atmospheric air into its primary components, typically nitrogen and oxygen, and sometimes also argon and other rare inert gases.

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Airborne particulate radioactivity monitoring

Continuous particulate air monitors (CPAMs) have been used for years in nuclear facilities to assess airborne particulate radioactivity (APR).

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Ajka

Ajka is a city in Hungary with about 35,000 inhabitants.

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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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Alkaline earth metal

The alkaline earth metals are six chemical elements in group 2 of the periodic table.

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Allende meteorite

The Allende meteorite is the largest carbonaceous chondrite ever found on Earth.

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Amchitka

Amchitka (Amchixtax̂) is a volcanic, tectonically unstable island in the Rat Islands group of the Aleutian Islands in southwest Alaska.

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Argon

Argon is a chemical element with symbol Ar and atomic number 18.

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Argon compounds

Argon compounds, the chemical compounds that contain the element argon, are rarely encountered due to the inertness of the argon atom.

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Argon flash

Argon flash, also known as argon bomb, argon flash bomb, argon candle, and argon light source, is a single-use source of very short and extremely bright flashes of light.

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Arundel Gardens

Arundel Gardens is a street and a communal 'garden square' in Notting Hill, London, one of seven streets between Ladbroke Grove and Kensington Park Road of which five share in a communal garden between them.

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Atmosphere of Jupiter

The atmosphere of Jupiter is the largest planetary atmosphere in the Solar System.

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Atmospheric chemistry

Atmospheric chemistry is a branch of atmospheric science in which the chemistry of the Earth's atmosphere and that of other planets is studied.

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Atomic radii of the elements (data page)

The atomic radius of a chemical element is the distance from the centre of the nucleus to the outermost shell of the electron.

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Atomic radius

The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding cloud of electrons.

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Ausonium

Ausonium (atomic symbol Ao) was the name assigned to the element with atomic number 93, now known as neptunium.

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Autonomous building

An autonomous building is a building designed to be operated independently from infrastructural support services such as the electric power grid, gas grid, municipal water systems, sewage treatment systems, storm drains, communication services, and in some cases, public roads.

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Behavior of nuclear fuel during a reactor accident

This page describes how uranium dioxide nuclear fuel behaves during both normal nuclear reactor operation and under reactor accident conditions, such as overheating.

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Beta attenuation monitoring

Beta attenuation monitoring (BAM) is a widely used air monitoring technique employing the absorption of beta radiation by solid particles extracted from air flow.

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Boiling points of the elements (data page)

No description.

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Bottled gas

Bottled gas is a term used for substances which are gaseous at standard temperature and pressure (STP) and have been compressed and stored in carbon steel, stainless steel, aluminum, or composite bottles known as gas cylinders.

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Bromine

Bromine is a chemical element with symbol Br and atomic number 35.

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Buffer gas

A buffer gas is an inert or nonflammable gas.

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Cadmium

Cadmium is a chemical element with symbol Cd and atomic number 48.

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Characterization of nanoparticles

The characterization of nanoparticles is a branch of nanometrology that deals with the characterization of physical and chemical properties of nanoparticles.

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Chemistry

Chemistry is the scientific discipline involved with compounds composed of atoms, i.e. elements, and molecules, i.e. combinations of atoms: their composition, structure, properties, behavior and the changes they undergo during a reaction with other compounds.

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Chemistry: A Volatile History

Chemistry: A Volatile History is a 2010 BBC documentary on the history of chemistry presented by Jim Al-Khalili.

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Chernobyl disaster

The Chernobyl disaster, also referred to as the Chernobyl accident, was a catastrophic nuclear accident.

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Comet Hale–Bopp

Comet Hale–Bopp (formally designated C/1995 O1) is a comet that was perhaps the most widely observed of the 20th century, and one of the brightest seen for many decades.

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Compounds of fluorine

Fluorine forms a great variety of chemical compounds, within which it almost always adopts an oxidation state of −1.

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Compounds of oxygen

The oxidation state of oxygen is −2 in almost all known compounds of oxygen.

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Conservation and restoration of neon objects

The conservation and restoration of neon objects is the process of caring for and maintaining neon objects (artworks), and includes documentation, examination, research, and treatment to insure their long-term viability, when desired.

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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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CPK coloring

In chemistry, the CPK coloring is a popular color convention for distinguishing atoms of different chemical elements in molecular models.

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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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Critical points of the elements (data page)

David R. Lide (ed), CRC Handbook of Chemistry and Physics, 85th Edition, online version.

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Curtain wall (architecture)

A curtain wall system is an outer covering of a building in which the outer walls are non-structural, utilized to keep the weather out and the occupants in.

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D-block contraction

The d-block contraction (sometimes called scandide contraction) is a term used in chemistry to describe the effect of having full d orbitals on the period 4 elements.

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Dakota Gasification Company

The Dakota Gasification Company is a synthetic natural gas producing company founded in 1984 in Beulah, North Dakota, United States.

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Densities of the elements (data page)

No description.

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Diatomic molecule

Diatomic molecules are molecules composed of only two atoms, of the same or different chemical elements.

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Egon Orowan

Egon Orowan FRS (Orován Egon) (August 2, 1902 – August 3, 1989) was a Hungarian/British/U.S. physicist and metallurgist.

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Electron affinity (data page)

This page deals with the electron affinity as a property of isolated atoms or molecules (i.e. in the gas phase).

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Electron configuration

In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals.

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Electron configurations of the elements (data page)

This page shows the electron configurations of the neutral gaseous atoms in their ground states.

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Electron shell

In chemistry and atomic physics, an electron shell, or a principal energy level, may be thought of as an orbit followed by electrons around an atom's nucleus.

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Electronegativities of the elements (data page)

No description.

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Endohedral fullerene

Endohedral fullerenes, also called endofullerenes, are fullerenes that have additional atoms, ions, or clusters enclosed within their inner spheres.

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Energy conversion efficiency

Energy conversion efficiency (η) is the ratio between the useful output of an energy conversion machine and the input, in energy terms.

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Excimer laser

An excimer laser, sometimes more correctly called an exciplex laser, is a form of ultraviolet laser which is commonly used in the production of microelectronic devices, semiconductor based integrated circuits or "chips", eye surgery, and micromachining.

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Experimental Breeder Reactor II

Experimental Breeder Reactor-II (EBR-II) is a reactor designed, built and operated by Argonne National Laboratory in Idaho.

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Fission products (by element)

On this page, a discussion of each of the main elements in the fission product mixture from the nuclear fission of an actinide such as uranium or plutonium is set out by element.

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Flashlight

A flashlight (more often called a torch outside North America) is a portable hand-held electric light.

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Flashtube

A flashtube, also called a flashlamp, is an electric arc lamp designed to produce extremely intense, incoherent, full-spectrum white light for very short durations.

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Flerovium

Flerovium is a superheavy artificial chemical element with symbol Fl and atomic number 114.

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Flibe Energy

Flibe Energy is an American company that intends to design, construct, and operate small modular reactors based on liquid fluoride thorium reactor (acronym LFTR; pronounced lifter) technology.

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Fluorescent lamp

A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light.

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Fluoride volatility

Fluoride volatility is the tendency of highly fluorinated molecules to vaporize at comparatively low temperatures.

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Fluorine

Fluorine is a chemical element with symbol F and atomic number 9.

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Gas

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

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Gas composition

The Gas composition of any gas can be characterised by listing the pure substances it contains, and stating for each substance its proportion of the gas mixture's molecule count.

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Gas-discharge lamp

Gas-discharge lamps are a family of artificial light sources that generate light by sending an electric discharge through an ionized gas, a plasma.

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Gas-filled tube

A gas-filled tube, also known as a discharge tube, is an arrangement of electrodes in a gas within an insulating, temperature-resistant envelope.

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George Samuel Hurst

George Samuel Hurst (13 October 1927 – 4 July 2010) was a health physicist, scientist, inventor, educator and innovator.

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Glossary of chemistry terms

Most of the terms listed in Wikipedia glossaries are already defined and explained within Wikipedia itself.

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Group 12 element

Group 12, by modern IUPAC numbering, is a group of chemical elements in the periodic table.

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Hall-effect thruster

In spacecraft propulsion, a Hall-effect thruster (HET) is a type of ion thruster in which the propellant is accelerated by an electric field.

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Halogen lamp

A halogen lamp, also known as a tungsten halogen, quartz-halogen or quartz iodine lamp, is an incandescent lamp consisting of a tungsten filament sealed into a compact transparent envelope that is filled with a mixture of an inert gas and a small amount of a halogen such as iodine or bromine.

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Hassium

Hassium is a synthetic chemical element with symbol Hs and atomic number 108.

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Heat capacities of the elements (data page)

No description.

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Heat capacity ratio

In thermal physics and thermodynamics, the heat capacity ratio or adiabatic index or ratio of specific heats or Poisson constant, is the ratio of the heat capacity at constant pressure to heat capacity at constant volume.

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Heats of fusion of the elements (data page)

No description.

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Heats of vaporization of the elements (data page)

No description.

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Heavy metals

Heavy metals are generally defined as metals with relatively high densities, atomic weights, or atomic numbers.

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Hermetic seal

A hermetic seal is any type of sealing that makes a given object airtight (excludes the passage of air, oxygen, or other gases).

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Hesperium

Hesperium (also known as esperium; atomic symbol Es) was the name assigned to the element with atomic number 94, now known as plutonium.

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History of chemistry

The history of chemistry represents a time span from ancient history to the present.

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History of mass spectrometry

The history of mass spectrometry has its roots in physical and chemical studies regarding the nature of matter.

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History of the metre

In the aftermath of the French Revolution (1789), the traditional units of measure used in the Ancien Régime were replaced.

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Hydride

In chemistry, a hydride is the anion of hydrogen, H−, or, more commonly, it is a compound in which one or more hydrogen centres have nucleophilic, reducing, or basic properties.

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Ice core

An ice core is a core sample that is typically removed from an ice sheet or a high mountain glacier.

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Imre Bródy

Imre Bródy (1891, Gyula, HungaryAntal Papp: Magyarország (Hungary), Panoráma, Budapest, 1982,, p. 860, pp. 453-456–1944, Mühldorf) was a Hungarian physicist who invented in 1930 the krypton-filled fluorescent lamps (also known as the krypton electric bulb), with fellow-Hungarian inventors Emil Theisz, Ferenc Kőrösy and Tivadar Millner.

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Incandescent light bulb

An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated to such a high temperature that it glows with visible light (incandescence).

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Index of chemistry articles

Chemistry (from Egyptian kēme (chem), meaning "earth") is the physical science concerned with the composition, structure, and properties of matter, as well as the changes it undergoes during chemical reactions.

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Indium

Indium is a chemical element with symbol In and atomic number 49.

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Industrial gas

Industrial gases are gaseous materials that are manufactured for use in Industry.

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Inhalational anaesthetic

An inhalational anaesthetic is a chemical compound possessing general anaesthetic properties that can be delivered via inhalation.

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Inorganic compounds by element

This is a list of common inorganic and organometallic compounds of each element.

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Insulated glazing

Insulating glass (IG), more commonly known as double glazing (or double-pane, and increasingly triple glazing/pane), consists of two or three glass window panes separated by a vacuum or gas filled space to reduce heat transfer across a part of the building envelope.

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Ion beam

An ion beam is a type of charged particle beam consisting of ions.

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Ion laser

An ion laser is a gas laser that uses an ionized gas as its lasing medium.

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Ionization energies of the elements (data page)

No description.

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Isotopes of krypton

There are 33 known isotopes of krypton (36Kr) with atomic mass numbers from 69 through 101.

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Isotopes of selenium

The chemical element selenium (34Se) has six natural isotopes that occur in significant quantities, along with the trace isotope 79Se, which occurs in minute quantities in uranium ores.

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Jacques Babinet

Jacques Babinet (5 March 1794 – 21 October 1872) was a French physicist, mathematician, and astronomer who is best known for his contributions to optics.

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Kilogram

The kilogram or kilogramme (symbol: kg) is the base unit of mass in the International System of Units (SI), and is defined as being equal to the mass of the International Prototype of the Kilogram (IPK, also known as "Le Grand K" or "Big K"), a cylinder of platinum-iridium alloy stored by the International Bureau of Weights and Measures at Saint-Cloud, France.

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Kinetic diameter

Kinetic diameter is a measure applied to atoms and molecules that expresses the likelihood that a molecule in a gas will collide with another molecule.

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KR

KR is the ISO 3166-1 alpha-2 and WMO country code for South Korea.

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Krypton (comics)

Krypton is a fictional planet appearing in American comic books published by DC Comics.

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Krypton (disambiguation)

Krypton is a chemical element with symbol Kr and atomic number 36.

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Krypton difluoride

Krypton difluoride, KrF2 is a chemical compound of krypton and fluorine.

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Krypton fluoride laser

A krypton fluoride laser (KrF laser) is a particular type of excimer laser, which is sometimes (more correctly) called an exciplex laser.

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Krypton-85

Krypton-85 (85Kr) is a radioisotope of krypton.

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Kryptonium ion

The kryptonium ion, KrH+, is an onium compound, consisting of protonated krypton.

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Krytron

The krytron is a cold-cathode gas-filled tube intended for use as a very high-speed switch, somewhat similar to the thyratron.

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Laser beam welding

Laser beam welding (LBW) is a welding technique used to join pieces of metal or thermoplastics through the use of a laser.

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Laser construction

A laser is constructed from three principal parts.

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Laser light show (Grand Coulee Dam)

The laser light show at Grand Coulee Dam, which began in 1989, is one of the largest light shows in the U.S..

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Laser projector

A laser projector is a device that projects changing laser beams on a screen to create a moving image for entertainment or professional use.

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Laser pumping

Laser pumping is the act of energy transfer from an external source into the gain medium of a laser.

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Laurence Wyman

Laurence Wyman is an American classical saxophone teacher who served many years as the professor of saxophone at the State University of New York at Fredonia (Fredonia, New York).

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Liquid fluoride thorium reactor

The liquid fluoride thorium reactor (acronym LFTR; often pronounced lifter) is a type of molten salt reactor.

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Lise Meitner

Lise Meitner (7 November 1878 – 27 October 1968) was an Austrian-Swedish physicist who worked on radioactivity and nuclear physics.

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List of acronyms: K

(Main list of acronyms).

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List of chemical element name etymologies

This is the list of etymologies for all chemical element names.

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List of chemical elements

, 118 chemical elements are identified.

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List of elements by atomic properties

This is a list of chemical elements and their atomic properties, ordered by Atomic number.

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List of elements by stability of isotopes

Atomic nuclei consist of protons and neutrons, which attract each other through the nuclear force, while protons repel each other via the electric force due to their positive charge.

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List of English inventions and discoveries

English inventions and discoveries are objects, processes or techniques invented, innovated or discovered, partially or entirely, in England by a person from England (that is, someone born in England - including to non-English parents - or born abroad with at least one English parent and who had the majority of their education or career in England).

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List of fusion experiments

Experiments directed toward developing fusion power are invariably done with dedicated machines which can be classified according to the principles they use to confine the plasma fuel and keep it hot.

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List of gases

This is a list of gases at standard conditions This means the substance boils at or below 25°C at 1 atmosphere pressure and is reasonably stable.

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List of MeSH codes (D01)

This is the fourth part of the list of the "D" codes for MeSH.

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List of oxidation states of the elements

This is a list of known oxidation states of the chemical elements, excluding nonintegral values.

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List of refrigerants

Chemical refrigerants are assigned an R number which is determined systematically according to molecular structure.

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List of UN numbers 1001 to 1100

The UN numbers from UN1001 to UN1100 as assigned by the United Nations Committee of Experts on the Transport of Dangerous Goods.

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List of UN numbers 1901 to 2000

The UN numbers from UN1901 to UN2000 as assigned by the United Nations Committee of Experts on the Transport of Dangerous Goods.

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List of vacuum tubes

This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, or discharge tubes.

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List of world production

This is a list of annual world production.

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Livermorium

Livermorium is a synthetic chemical element with symbol Lv and atomic number 116.

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Lucia V. Streng

Lucia V. Streng (c. 1910–1995) was a Russian-born chemist.

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Magic number (physics)

In nuclear physics, a magic number is a number of nucleons (either protons or neutrons, separately) such that they are arranged into complete shells within the atomic nucleus.

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Maglite

Maglite (also spelled Mag-Lite) is a brand of flashlight manufactured in the United States by Mag Instrument, Inc.

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Mass Spectrometer for Planetary Exploration

The MAss SPectrometer for Planetary EXploration (MASPEX) is a mass spectrometer capable of high-resolution and high-sensitivity that allows the determination of a wide variety of chemical compounds in complex mixtures.

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Matrix isolation

Matrix isolation is an experimental technique used in chemistry and physics which generally involves a material being trapped within an unreactive matrix.

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Mössbauer spectroscopy

Mössbauer spectroscopy is a spectroscopic technique based on the Mössbauer effect.

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Melting points of the elements (data page)

No description.

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Mercury (planet)

Mercury is the smallest and innermost planet in the Solar System.

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Metre

The metre (British spelling and BIPM spelling) or meter (American spelling) (from the French unit mètre, from the Greek noun μέτρον, "measure") is the base unit of length in some metric systems, including the International System of Units (SI).

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Metre Convention

The Metre Convention (Convention du Mètre), also known as the Treaty of the Metre, is an international treaty that was signed in Paris on 20 May 1875 by representatives of 17 nations (Argentina, Austria-Hungary, Belgium, Brazil, Denmark, France, Germany, Italy, Peru, Portugal, Russia, Spain, Sweden and Norway, Switzerland, Turkey, United States of America, and Venezuela).

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Molar ionization energies of the elements

These tables list values of molar ionization energies, measured in kJ mol−1.

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Molière radius

The Molière radius is a characteristic constant of a material giving the scale of the transverse dimension of the fully contained electromagnetic showers initiated by an incident high energy electron or photon.

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Molten-Salt Reactor Experiment

The Molten-Salt Reactor Experiment (MSRE) was an experimental molten salt reactor at the Oak Ridge National Laboratory (ORNL) researching this technology through the 1960s; constructed by 1964, it went critical in 1965 and was operated until 1969.

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Monatomic gas

In physics and chemistry, monatomic is a combination of the words "mono" and "atomic", and means "single atom".

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Morris Travers

Morris William Travers (24 January 1872 – 25 August 1961) was an English chemist who worked with Sir William Ramsay in the discovery of xenon, neon and krypton.

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Nanoclusters

Metal nanoclusters consist of a small number of atoms, at most in the tens.

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Nd:YAG laser

Nd:YAG (neodymium-doped yttrium aluminum garnet; Nd:Y3Al5O12) is a crystal that is used as a lasing medium for solid-state lasers.

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Neon

Neon is a chemical element with symbol Ne and atomic number 10.

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Neon lamp

A neon lamp (also neon glow lamp) is a miniature gas discharge lamp.

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Neon sign

In the signage industry, neon signs are electric signs lighted by long luminous gas-discharge tubes that contain rarefied neon or other gases.

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NFPA 704

"NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response" is a standard maintained by the U.S.-based National Fire Protection Association.

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Nitrogen clathrate

Nitrogen clathrate or nitrogen hydrate is a clathrate consisting of ice with regular crystalline cavities that contain nitrogen molecules.

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Nitrogen narcosis

Narcosis while diving (also known as nitrogen narcosis, inert gas narcosis, raptures of the deep, Martini effect) is a reversible alteration in consciousness that occurs while diving at depth.

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Noble gas

The noble gases (historically also the inert gases) make up a group of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity.

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Noble gas (data page)

This page provides supplementary data about the noble gases, which were excluded from the main article to conserve space and preserve focus.

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Noble gas compound

Noble gas compounds are chemical compounds that include an element from the noble gases, group 18 of the periodic table.

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Nonmetal

Apart from hydrogen, nonmetals are located in the p-block. Helium, as an s-block element, would normally be placed next to hydrogen and above beryllium. However, since it is a noble gas, it is instead placed above neon (in the p-block). In chemistry, a nonmetal (or non-metal) is a chemical element that mostly lacks metallic attributes.

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Nuclear binding energy

Nuclear binding energy is the minimum energy that would be required to disassemble the nucleus of an atom into its component parts.

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Nuclear fuel

Nuclear fuel is a substance that is used in nuclear power stations to produce heat to power turbines.

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Nuclear medicine

Nuclear medicine is a medical specialty involving the application of radioactive substances in the diagnosis and treatment of disease.

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Nuclear pumped laser

A nuclear pumped laser is a laser pumped with the energy of fission fragments.

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Nuclear reactor safety system

The three primary objectives of nuclear reactor safety systems as defined by the U.S. Nuclear Regulatory Commission are to shut down the reactor, maintain it in a shutdown condition and prevent the release of radioactive material.

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Oganesson

Oganesson is a synthetic chemical element with symbol Og and atomic number 118.

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Onium compound

In chemistry, an onium ion, is a cation formally obtained by the protonation of mononuclear parent hydride of a pnictogen (group 15 of the periodic table), chalcogen (group 16), or halogen (group 17).

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Open shell

In the context of atomic orbitals, an open shell is a valence shell which is not completely filled with electrons or that has not given all of its valence electrons through chemical bonds with other atoms or molecules during a chemical reaction.

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Optoelectric nuclear battery

An opto-electric nuclear battery is a device that converts nuclear energy into light, which it then uses to generate electrical energy.

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Orders of magnitude (specific heat capacity)

This is a table of specific heat capacities by magnitude.

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Pakistan Atomic Research Reactor

The Pakistan Atomic Research Reactor or (PARR) are two nuclear research reactors and two other experimental neutron sources located in the PINSTECH Laboratory, Nilore, Islamabad, Pakistan.

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Passive house

Passive house (Passivhaus) is a rigorous, voluntary standard for energy efficiency in a building, which reduces the building's ecological footprint.

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Pattipati Ramaiah Naidu

Pattipati Ramaiah Naidu (a.k.a. Dr. Ramaiah Naidu) (June 1904 - 6 June 1991) was a pioneering Indian nuclear Physicist, Medical Scientist and Radiologist who helped to establish the foundations of medical physics.

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Period (periodic table)

A period in the periodic table is a horizontal row.

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Period 4 element

A period 4 element is one of the chemical elements in the fourth row (or period) of the periodic table of the elements.

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Periodic table (electron configurations)

* Configurations of elements 109 and above are not available.

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Plasma globe

A plasma globe or plasma lamp (also called plasma ball, dome, sphere, tube or orb, depending on shape) is (usually) a clear glass sphere filled with a mixture of various noble gases with a high-voltage electrode in the center of the sphere.

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Plutonium

Plutonium is a radioactive chemical element with symbol Pu and atomic number 94.

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Pressure-induced hydration

Pressure-induced hydration (PIH), also known as “super-hydration”, is a special case of pressure-induced insertion whereby water molecules are injected into the pores of microporous materials.

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Prices of elements and their compounds

This table lists the elements by their name and gives some historical prices for them and their commonly traded compounds.

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Project Grab Bag

Project Grab Bag was an air sampling program conducted in the United States for the monitoring in the stratosphere of above-ground nuclear weapons testing in the Soviet Union.

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Proton affinity (data page)

Proton affinities are quoted in kJ/mol, in increasing order of gas-phase basicity of the base.

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Proton-transfer-reaction mass spectrometry

Proton-transfer-reaction mass spectrometry (PTR-MS) is an analytical chemistry technique that uses gas phase hydronium ions as ion source reagents.

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Pulsed discharge ionization detector

A pulsed discharge ionization detector (pulsed discharge detector) is a detector for gas chromatography that utilizes a stable, low powered, pulsed DC discharge in helium as an ionization source.

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Radiopharmaceutical

Radiopharmaceuticals, or medicinal radiocompounds, are a group of pharmaceutical drugs which have radioactivity.

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Replacement window

A replacement window is a window that is installed in an existing window opening as replacement of the existing window.

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Robert Smolańczuk

Robert Smolańczuk (born in Olecko, Poland) is a Polish theoretical physicist.

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Rockne Krebs

Rockne Krebs (1938–2011) was a contemporary American artist and sculptor.

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Roles of chemical elements

This table is designed to show the role(s) performed by each chemical element, in nature and in technology.

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S-process

The slow neutron-capture process or s-process is a series of reactions in nuclear astrophysics that occur in stars, particularly AGB stars.

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Science and technology in Hungary

Science and technology in Hungary is one of the country's most developed sectors.

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Scintillator

A scintillator is a material that exhibits scintillation—the property of luminescence, when excited by ionizing radiation.

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Soviet submarine K-27

K-27 was the only submarine of Project 645 in the Soviet Navy.

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Space Solar Power Exploratory Research and Technology program

orbit.

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Speeds of sound of the elements (data page)

No description.

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Spent nuclear fuel

Spent nuclear fuel, occasionally called used nuclear fuel, is nuclear fuel that has been irradiated in a nuclear reactor (usually at a nuclear power plant).

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Stable salt reactor

The stable salt reactor (SSR) is a nuclear reactor design proposed by Moltex Energy Ltd based in the UK.

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Superboy (Kon-El)

Superboy (also known as Kon-El or Conner Kent) is a fictional superhero appearing in American comic books published by DC Comics.

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TEA laser

A TEA laser is a gas laser energized by a high voltage electrical discharge in a gas mixture generally at or above atmospheric pressure.

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The Elements (song)

"The Elements" is a song by musical humorist and lecturer Tom Lehrer, which recites the names of all the chemical elements known at the time of writing, up to number 102, nobelium.

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Thermal conductivities of the elements (data page)

No description.

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Thermal conductivity

Thermal conductivity (often denoted k, λ, or κ) is the property of a material to conduct heat.

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Three Mile Island Nuclear Generating Station

Three Mile Island Nuclear Generating Station (TMI) is a nuclear power plant located on Three Mile Island in Londonderry Township, Pennsylvania, on the Susquehanna River just south of Harrisburg.

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Timeline of chemical element discoveries

The discovery of the 118 chemical elements known to exist today is presented here in chronological order.

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Triple point

In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium.

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Trivial name

In chemistry, a trivial name is a nonsystematic name for a chemical substance.

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Tungsram

Tungsram is in one of Hungary's largest, oldest, and internationally most prestigious firms, known for light bulbs and electronics.

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Turboexpander

A turboexpander, also referred to as a turbo-expander or an expansion turbine, is a centrifugal or axial-flow turbine, through which a high-pressure gas is expanded to produce work that is often used to drive a compressor or generator.

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Underground nuclear weapons testing

Underground nuclear testing is the test detonation of nuclear weapons that is performed underground.

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Unison Industries

Unison Industries, LLC, headquartered Jacksonville, Florida, is involved in the design, manufacture, and integration of electrical and mechanical components and systems for aircraft engines and airframes.

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University College London

University College London (UCL) is a public research university in London, England, and a constituent college of the federal University of London.

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Uranium-235

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

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Valley of stability

In nuclear physics, the valley of stability (also called the nuclear valley, energy valley, or beta stability valley) is a characterization of the stability of nuclides to radioactivity based on their binding energy.

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Van der Waals constants (data page)

The following table lists the van der Waals constants (from the van der Waals equation) for a number of common gases and volatile liquids.

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Vapor pressures of the elements (data page)

No description.

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William Hampson

William Hampson (born 14 March 1854 in Bebington, Merseyside (formerly: Cheshire), England – died 1 January 1926 in Holland Park, London, England) was the first person to patent a process for liquifying air.

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William Ramsay

Sir William Ramsay (2 October 1852 – 23 July 1916) was a Scottish chemist who discovered the noble gases and received the Nobel Prize in Chemistry in 1904 "in recognition of his services in the discovery of the inert gaseous elements in air" (along with his collaborator, John William Strutt, 3rd Baron Rayleigh, who received the Nobel Prize in Physics that same year for their discovery of argon).

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Window

A window is an opening in a wall, door, roof or vehicle that allows the passage of light, sound, and air.

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Xenon

Xenon is a chemical element with symbol Xe and atomic number 54.

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Xenon monochloride

Xenon monochloride (XeCl) is an excimer which is used in excimer lasers emitting near ultraviolet light at 308 nm.

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Xenon-135

Xenon-135 (135Xe) is an unstable isotope of xenon with a half-life of about 9.2 hours.

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1890s

The 1890s was the ten-year period from the years 1890 to 1899.

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1898 in science

The year 1898 in science and technology involved some significant events, listed below.

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1898 in the United Kingdom

Events from the year 1898 in the United Kingdom.

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36 (number)

36 (thirty-six) is the natural number following 35 and preceding 37.

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Redirects here:

Element 36, Kr (element), Kripton, Krypton (element), Krypton gas.

References

[1] https://en.wikipedia.org/wiki/Krypton

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