- periodic equilibrium
- мат. периодическое равновесие
Большой англо-русский и русско-английский словарь. 2001.
Большой англо-русский и русско-английский словарь. 2001.
Periodic graph (crystallography) — For other uses, see Periodic graph. A (large) unit cell of Diamond crystal net; the balls represent carbon atoms and the sticks represent covalent bonds … Wikipedia
Periodic acid — Orthoperiodic acid Other names Paraperiodic acid … Wikipedia
Periodic trends — In Chemistry, periodic trends are the tendencies of certain elemental characteristics to increase or decrease as one progresses from one corner of the Periodic table of elements.AcidityThe Lewis acidity of each element tends to increase when… … Wikipedia
Punctuated equilibrium — is a theory of evolutionary biology which states that most sexually reproducing populations experience little change for most of their geological history, and that when phenotypic evolution does occur, it is localized in rare, rapid events of… … Wikipedia
Academic studies about Wikipedia — Content Production A minority of editors produce the majority of persistent content In a landmark peer reviewed paper,Reid Priedhorsky, Jilin Chen, Shyong (Tony) K. Lam, Katherine Panciera, Loren Terveen, John Riedl, Creating, destroying, and… … Wikipedia
continental landform — ▪ geology Introduction any conspicuous topographic feature on the largest land areas of the Earth. Familiar examples are mountains (including volcanic (volcanism) cones), plateaus, and valleys. (The term landform also can be applied to… … Universalium
Chemistry — For other uses, see Chemistry (disambiguation). Chemistry is the science of atomic matter (that made of chemical elements), its properties, structure, comp … Wikipedia
rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 … Universalium
vibration — vibrational, adj. vibrationless, adj. /vuy bray sheuhn/, n. 1. the act of vibrating. 2. the state of being vibrated. 3. Physics. a. the oscillating, reciprocating, or other periodic motion of a rigid or elastic body or medium forced from a… … Universalium
sound — sound1 soundable, adj. /sownd/, n. 1. the sensation produced by stimulation of the organs of hearing by vibrations transmitted through the air or other medium. 2. mechanical vibrations transmitted through an elastic medium, traveling in air at a… … Universalium
Sound — /sownd/, n. The, a strait between SW Sweden and Zealand, connecting the Kattegat and the Baltic. 87 mi. (140 km) long; 3 30 mi. (5 48 km) wide. Swedish and Danish, Oresund. * * * I Mechanical disturbance that propagates as a longitudinal wave… … Universalium