DomainTools.com |
 |
||
|
|
||
English Wikipedia references for Aps.org 1-50 of 1186
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | >>
| Language: | ||||||||||||
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
| Articles: | 1,186 |
184 |
118 |
68 |
89 |
49 |
22 |
35 |
59 |
92 |
15 |
62 |
| Atom Atom | |
| Alloy An alloy is a partial or complete solid solution of one or more elements in a metallic matrix. Complete solid solution alloys give single solid phase microstructure, while partial solutions give two or more phases that may be homogeneous in distribution depending on thermal (heat treatment) history. Alloys usually have different properties from those of the component elements. Alloy | |
| Atomic orbital An atomic orbital is a mathematical function that describes the wave-like behavior of an electron in an atom. This function can be used to calculate the probability of finding any electron of an atom in any specific region around the atom's nucleus. These functions may serve as three-dimensional graph of an electron’s likely location. Atomic_orbital | |
| Ammonia Ammonia is a compound of nitrogen and hydrogen with the formula NH3. It is normally encountered as a gas with a characteristic pungent odor. Ammonia contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to foodstuffs and fertilizers. Ammonia | |
| Bohrium Bohrium () is a chemical element in the periodic table that has the symbol Bh and atomic number 107.It is a synthetic element whose most stable isotope, 270Bh, has a half-life of 61 seconds. Chemical experiments confirmed bohrium's predicted position as a member of group 7 of the periodic table, as a heavier homologue to rhenium. Bohrium | |
| BCS theory The BCS theory reproduces the isotope effect, which is the experimental observation that for a given superconducting material, the critical temperature is inversely proportional to the mass of the isotope used in the material. The isotope effect was reported by two groups on the 24th of March 1950, who discovered it independently working with different mercury isotopes, although a few days before publication they learned of each other's results at the ONR conference in Atlanta, Georgia. BCS_theory | |
| Black hole In general relativity, a black hole is a region of space in which the gravitational field is so powerful that nothing, including light, can escape its pull. The black hole has a one-way surface, called an event horizon, into which objects can fall, but out of which nothing can come. It is called "black" because it absorbs all the light that hits it, reflecting nothing, just like a perfect blackbody in thermodynamics. Quantum analysis of black holes shows them to possess a temperature and Hawking radiation. Black_hole | |
| Carbon nanotube Carbon nanotubes (CNTs) are allotropes of carbon with a cylindrical nanostructure. Nanotubes have been constructed with length-to-diameter ratio of up to 28,000,000carbon molecules have novel properties that make them potent Carbon_nanotube | |
| Chemical element A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus. The term is also used to refer to a pure chemical substance composed of atoms with the same number of protons. Chemical_element | |
| Cerium Cerium () is a chemical element with the symbol Ce and atomic number 58. Cerium | |
| CNO cycle The CNO cycle (for carbon-nitrogen-oxygen), or sometimes Bethe-Weizsäcker-cycle, is one of two sets of fusion reactions by which stars convert hydrogen to helium, the other being the proton-proton chain. Theoretical models show that the CNO cycle is the dominant source of energy in stars heavier than about 1.5 times the mass of the sun. CNO_cycle | |
| Chaos theory mathematics, chaos theory describes the behavior of certain dynamical systems – that is, systems whose states evolve with time – that may exhibit dynamics that are highly sensitive to initial conditions (popularly referred to as the butterfly effect). As a result of this sensitivity, which manifests itself as an exponential growth of perturbations in the initial conditions, the behavior of chaotic systems appears to be random. Chaos_theory | |
| Copernican principle cosmology, the Copernican principle, named after Nicolaus Copernicus, states the Earth is not in a central, specially favoured position. More recently, the principle is generalised to the relativistic concept that humans are not privileged observers of the universe. In this sense, it is equivalent to the mediocrity principle, with significant implications in the philosophy of science. Copernican_principle | |
| Cosmic microwave background radiation Talk:Cosmic_microwave_background_radiation | |
| Cold fusion Cold fusion refers to a postulated nuclear fusion process of unknown mechanism offered to explain a group of disputed experimental results first reported by electrochemists Martin Fleischmann and Stanley Pons. Cold fusion research sometimes is referred to as low energy nuclear reaction (LENR) studies or condensed matter nuclear science.Cold fusion, under this definition, was first announced on March 23, 1989 when Fleischmann and Pons reported producing nuclear fusion in a tabletop experiment involving electrolysis of heavy water on a palladium (Pd) electrode. Cold_fusion | |
| Casimir effect physics, the Casimir effect and the Casimir-Polder force are physical forces arising from a quantized field. The typical example is of two uncharged metallic plates in a vacuum, placed a few micrometers apart, without any external electromagnetic field. In a classical description, the lack of an external field also means that there is no field between the plates, and no force would be measured between them. Casimir_effect | |
| Casimir effect Talk:Casimir_effect | |
| Crystallographic defect crystal structures, and their study is called crystallography. However, most crystalline materials are not perfectcrystal defects. . Crystallographic_defect | |
| Timeline of chemical elements discoveries Given is each element's name, atomic number, year of first report, name of the discoverer, and some notes related to the discovery. Timeline_of_chemical_elements_discoveries | |
| Dubnium Dubnium () is a chemical element in the periodic table that has the symbol Db and atomic number 105.This is a radioactive synthetic element whose most stable isotope is 268Db with a half life of 28 hours. This is the longest lived transactinide isotope and is a reflection of the stability of the Z N Periodic Table. Dubnium | |
| Deuterium Deuterium, also called heavy hydrogen, is a stable isotope of hydrogen with a natural abundance in the oceans of Earth of approximately one atom in of hydrogen (~). Deuterium thus accounts for approximately 0.015% (alternately, on a weight basisVSMOW; the abundance changes slightly from one kind of natural water to another). Deuterium | |
| Dark matter In astronomy and cosmology, dark matter is hypothetical matter that is undetectable by its emitted radiation, but whose presence can be inferred from gravitational effects on visible matter. Dark matter is postulated to explain the flat rotation curves of spiral galaxies and other evidence of "missing mass" in the universe. Dark_matter | |
| Douglas Hofstadter Douglas Richard Hofstadter (born February 15, 1945 in New York, New York) is an American academic whose research focuses on consciousness, thinking and creativity. He is best known for his book Gödel, Escher, Bach, first published in 1979, for which he was awarded the 1980 Pulitzer Prize for general non-fiction. Douglas_Hofstadter | |
| Electroweak interaction In particle physics, the electroweak interaction is the unified description of two of the four fundamental interactions of natureelectromagnetism and the weak interaction. Although these two forces appear very different at everyday low energies, the theory models them as two different aspects of the same force. Electroweak_interaction | |
| Enrico Fermi Enrico Fermi (29 September 1901 – 28 November 1954) was an Italian physicist most noted for his work on the development of the first nuclear reactor, and for his contributions to the development of quantum theory, nuclear and particle physics, and statistical mechanics. Enrico_Fermi | |
| EPR paradox In quantum mechanics, the EPR paradox (or Einstein–Podolsky–Rosen paradox) is a thought experiment which challenged long-held ideas about the relation between the observed values of physical quantities and the values that can be accounted for by a physical theory. "EPR" stands for Einstein, Podolsky, and Rosen, who introduced the thought experiment in a 1935 paper to argue that quantum mechanics is not a complete physical theory. EPR_paradox | |
| Edwin Hubble Edwin Powell Hubble (November 29, 1889 – September 28, 1953) was an American astronomer. He profoundly changed our understanding of the universe by demonstrating the existence of other galaxies besides the Milky Way. He also discovered that the degree of redshift observed in light coming from a galaxy increased in proportion to the distance of that galaxy from the Milky Way. This became known as Hubble's law, and would help establish that the universe is expanding. Edwin_Hubble | |
| Francium Francium (), formerly known as eka-caesium and actinium K, is a chemical element that has the symbol Fr and atomic number 87. It has the lowest electronegativity of all known elements, and is the second rarest naturally occurring element (after astatine). Francium is a highly radioactive metal that decays into astatine, radium, and radon. As an alkali metal, it has one valence electron. Francium | |
| Fermium Fermium () is a synthetic element with the symbol Fm and atomic number 100. A highly radioactive metallic transuranic element of the actinide series, fermium is made by bombarding plutonium with neutrons and is named after nuclear physicist Enrico Fermi. Fermium is the eighth transuranic element. Fermium | |
| Graviton In physics, the graviton is a hypothetical elementary particle that mediates the force of gravity in the framework of quantum field theory. If it exists, the graviton must be massless (because the gravitational force has unlimited range) and must have a spin of 2 (because gravity is a second-rank tensor field).Gravitons are postulated because of the great success of the quantum field theory (in particular, the Standard Model) at modeling the behavior of all other forces of nature with similar particleselectromagnetism with the photon, the strong interaction with the gluons, and the weak interaction with the W and Z bosons. Graviton | |
| Graphite The mineral graphite is one of the allotropes of carbon. It was named by Abraham Gottlob Werner in 1789 from the Greek γραφειν (graphein)pencils, where it is commonly called lead, as distinguished from the actual metallic element lead. Unlike diamond (another carbon allotrope), graphite is an electrical conductor, a semimetal, and can be used, for instance, in the electrodes of an arc lamp. Graphite | |
| Glass Glass generally refers to hard, brittle, transparent material, such as those used for windows, many bottles, or eyewear. Examples of such materials include, but are not limited to, soda-lime glass, borosilicate glass, acrylic glass, sugar glass, isinglass (Muscovy-glass), or aluminium oxynitride. In the technical sense, glass is an inorganic product of fusion which has been cooled through the glass transition to a rigid condition without crystallizing. Many glasses contain silica as their main com Glass | |
| Gluon Gluon | |
| Helium Helium () is the chemical element with atomic number 2, and is represented by the symbol He. It is a colorless, odorless, tasteless, non-toxic, inert monatomic gas that heads the noble gas group in the periodic table. Its boiling and melting points are the lowest among the elements and it exists only as a gas except in extreme conditions.An unknown yellow spectral line signature in sunlight was first observed from a solar eclipse in 1868 by French astronomer Pierre Janssen. Helium | |
| Hassium Hassium ( or Hassium | |
| Holographic principle The holographic principle is a property of quantum gravity theories which resolves the black hole information paradox within string theory. First proposed by Gerard 't Hooft, it was given a precise string-theory interpretation by Leonard Susskind.The principle states that the description of a volume of space should be thought of as encoded on a boundary to the region, preferably a light-like boundary like a gravitational horizon. Holographic_principle | |
| Intelligent design/Archive 23 Talk:Intelligent_design/Archive_23 | |
| Entropy (information theory) In information theory, entropy is a measure of the uncertainty associated with a random variable. The term by itself in this context usually refers to the Shannon entropy, which quantifies, in the sense of an expected value, the information contained in a message, usually in units such as bits. Entropy_(information_theory) | |
| James Randi James Randi (born August 7, 1928) (stage name The Amazing Randi) is a stage magician and scientific skeptic best known as a challenger of paranormal claims and pseudoscience. Born Randall James Hamilton Zwinge, James_Randi | |
| Leon M. Lederman Leon Max Lederman (born July 15, 1922) is an American experimental physicist and Nobel Prize in Physics laureate for his work with neutrinos. He is Director Emeritus of Fermi National Accelerator Laboratory (Fermilab) in Batavia, Illinois. He founded the Illinois Mathematics and Science Academy, in Aurora, Illinois in 1986, and has served in the capacity of Resident Scholar since 1998. Leon_M._Lederman | |
| Liquid crystal Liquid crystals (LCs) are substances that exhibit a phase of matter that has properties between those of a conventional liquid and those of a solid crystal. For instance, an LC may flow like a liquid, but its molecules may be oriented in a crystal-like way. Liquid_crystal | |
| Light-emitting diode A light-emitting diode (LED) (, or just ), is an electronic light source. The LED was first invented in Russia in the 1920s, and introduced in America as a practical electronic component in 1962. Oleg Vladimirovich Losev was a radio technician who noticed that diodes used in radio receivers emitted light when current was passed through them. In 1927, he published details in a Russian journal of the first ever LED. Light-emitting_diode | |
| Microfluidics Microfluidics deals with the behavior, precise control and manipulation of fluids that are geometrically constrained to a small, typically sub-millimeter, scale. micro means one of the following features small volumes(nl, pl, fl) small size low energy consumption effects of the micro domain It is a multidisciplinary field intersecting engineering, physics, chemistry, microtechnology and biotechnology, with practicalDNA chips, lab-on-a-chip technology, micro-propulsion, and micro-thermal technologies. Microfluidics | |
| Microscopy Microscopy is the technical field of using microscopes to view samples or objects. There are three well-known branches of microscopy, optical, electron and scanning probe microscopy.Optical and electron microscopy involve the diffraction, reflection, or refraction of electromagnetic radiation/electron beam interacting with the subject of study, and the subsequent collection of this scattered radiation in order to build up an image. Microscopy | |
| Materials science Materials science or materials engineering is an interdisciplinary field involving the properties of matter and its applications to various areas of science and engineering. This science investigates the relationship between the structure of materials at atomic or molecular scales and their macroscopic properties. Materials_science | |
| Molecular nanotechnology Molecular nanotechnology (MNT) is the concept of engineering functional mechanical systems at the molecular scale. An equivalent definition would be "machines at the molecular scale designed and built atom-by-atom". This is distinct from nanoscale materials. Molecular_nanotechnology | |
| Mercury (planet) Mercury_(planet) | |
| Muon The muon (from the Greek letter mu (μ) used to represent it) is an elementary particle similar to the electron, with negative electric charge and a spin of . Together with the electron, the tauon, and the three neutrinos, it is classified as a lepton. It is the unstable subatomic particle with the second longest mean lifetime (), behind the neutron (~). Muon | |
| Neutrino Neutrinos (meaning "Small neutral ones") are elementary particles that often travel close to the speed of light, lack an electric charge, are able to pass through ordinary matter almost undisturbed and are thus extremely difficult to detect. Neutrinos have a minuscule, but nonzero mass. Neutrino | |
| Naked singularity In general relativity, a naked singularity is a gravitational singularity without an event horizon. The singularities inside black holes are always surrounded by an area which does not allow light to escape, and therefore cannot be directly observed. A naked singularity, by contrast, is observable from the outside.The theoretical existence of naked singularities is important because their existence would mean that it would be possible to observe the collapse of an object to infinite density. Naked_singularity |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | >>
