42,772 articles
Majorana neutrino
A Majorana neutrino is a hypothetical neutrino that is its own antiparticle, proposed by Ettore Majorana in 1937; its most sensitive test is the search for neutrinoless double-beta decay.
Majorana phases
Majorana phases are the two CP-violating phases, α and β, that appear in the neutrino mixing matrix if neutrinos are their own antiparticles; neutrino oscillations cannot see them.
Majorana zero mode
A Majorana zero mode, also called a Majorana bound state, is a zero-energy quasiparticle in a superconductor that is its own antiparticle, localized at a topological superconductor's boundary.
Majorite
Majorite is a high-pressure garnet-group mineral in which silicon enters octahedral sites, occurring in the mantle transition zone and in shocked meteorites; it was named for Alan Major.
Majorization
Majorization is a partial order on real vectors, introduced by Hardy, Littlewood, and Pólya, that formalizes one vector being more spread out, or less random, than another.
Majorization and entropy ordering of quantum states
Majorization is a preorder on probability vectors and quantum state spectra that formalizes when one distribution is more disordered, and by Nielsen's theorem it fully determines LOCC conversion of bipartite pure states.
Makar Sankranti (मकर संक्रांति)
Makar Sankranti, also known as Makara Sankranti (मकर संक्रांति), is a Hindu harvest festival marking the Sun's entry into Capricorn, celebrated on 14 January across India and Nepal.
Makemake
Makemake is a dwarf planet in the Kuiper Belt beyond Neptune, discovered in 2005 and named in 2008; it is that belt's second-brightest object after Pluto.
Maki Kawai
Maki Kawai is a Japanese surface chemist known for single-molecule studies with the scanning tunneling microscope and president of Japan's National Institutes of Natural Sciences since 2022.
Makoto Fujita
Makoto Fujita (藤田 誠), born 1957, is a Japanese coordination chemist at the University of Tokyo known for self-assembled molecular cages and the crystalline sponge method for X-ray analysis.
Makoto Kobayashi
Makoto Kobayashi is a Japanese particle theorist, born in Nagoya in 1944, who shared the 2008 Nobel Prize in Physics for predicting a third family of quarks.
Makoto Kumada
Makoto Kumada (熊田 誠, 1920–2007) was a Japanese organometallic chemist at Kyoto University, known as the father of polysilane chemistry and for the 1972 Kumada coupling.
Makoto Miyoshi
Makoto Miyoshi is a Japanese radio astronomer at the National Astronomical Observatory of Japan, first author of the 1995 Nature paper that weighed the black hole in galaxy NGC 4258.
Makrana marble
Makrana marble is a white calcite marble quarried at Makrana in Rajasthan, India, the stone of the Taj Mahal and Asia's first Global Heritage Stone Resource in 2023.
Malachite
Malachite, also known as Bremen green as a pigment, is a green copper carbonate mineral used for thousands of years as a copper ore, pigment, gemstone, and sculptural material.
Malachite green
Malachite green, also known as aniline green, is a synthetic triphenylmethane dye first synthesized in 1877, used as an industrial colorant and biological stain and banned in food-fish aquaculture.
Malayalam calendar (കൊല്ലവർഷം)
The Malayalam calendar (കൊല്ലവർഷം), also called Kollavarsham or the Kollam Era, is Kerala's traditional solar calendar, counted from 825 CE and still used for festivals.
Malcolm A LeCompte
Malcolm A. LeCompte is an American scientist, former Naval flight officer, and co-director of the Comet Research Group, a principal researcher in the Younger Dryas impact debate.
Malcolm Chisholm
Malcolm Chisholm (1945–2015) was a British-born inorganic chemist who became a leading figure in metal–metal multiple bond chemistry, holding posts at Princeton, Indiana University, and Ohio State.
Malcolm Dole
Malcolm Dole (1903–1990) was an American chemist who spent nearly 40 years at Northwestern University, discovered the Dole effect in atmospheric oxygen isotopes, and showed in 1947 that radiation crosslinks polyethylene.
Malcolm Green (inorganic chemist)
Malcolm Green (1936–2020) was a British inorganic chemist at Oxford, a leading figure in organometallic chemistry who named the agostic bond and devised the Covalent Bond Classification of ligands.
Malcolm H. Levitt
Malcolm H. Levitt, born 1957 in Hull, England, is a British NMR spectroscopist and professor at Southampton, known for composite pulses, long-lived spin states, and endofullerenes.
Malcolm Longair
Malcolm Longair (born 1941) is a Scottish astronomer and high energy astrophysicist who was Astronomer Royal for Scotland and headed the Cavendish Laboratory from 1997 to 2005.
Malcolm R. Beasley
Malcolm R. Beasley, born 1940, is an American condensed matter physicist known for work on superconductivity in thin films, for SQUID magnetometers, and for leadership roles at Stanford University.
Malcolm T. McCulloch
Malcolm T. McCulloch, born 1950, is an Australian isotope geochemist at the University of Western Australia known for using coral skeletons to reconstruct the Great Barrier Reef's environmental history.
MALDI imaging mass spectrometry
MALDI imaging mass spectrometry (MALDI-IMS), introduced by Richard Caprioli and colleagues in 1997, maps molecules across tissue sections at cellular resolution, without labels, from metabolites to proteins.
MALDI-2
MALDI-2 is a laser post-ionization technique for matrix-assisted laser desorption/ionization mass spectrometry, introduced in 2015, that raises ion yields for lipids, vitamins, and drugs by up to about 100-fold.
MALDI-TOF mass spectrometry
MALDI-TOF mass spectrometry is an analytical method that ionizes molecules with a laser-absorbing matrix and measures their masses, widely used to identify microbes in minutes.
Maleic acid
Maleic acid, or cis-butenedioic acid, is the cis isomer of butenedioic acid, a crystalline dicarboxylic acid whose trans isomer is fumaric acid; it is made from maleic anhydride.
Maleic anhydride
Maleic anhydride, also called cis-butenedioic anhydride or toxilic anhydride, is the cyclic anhydride of maleic acid, a colorless crystalline solid made by oxidizing n-butane and used chiefly for unsaturated polyester resins.