decay series
81цепочка бета-распадов — beta skilimų grandinėlė statusas T sritis fizika atitikmenys: angl. beta decay series; beta disintegration series vok. Beta Zerfallsreihe, f rus. цепочка бета распадов, f pranc. série de désintégration bêta, f …
82equilibrium — [ē΄kwi lib′rē əm; ] also [ ek΄wilib′rē əm] n. pl. equilibriums or equilibria [ē΄kwə lib′rēə] [L aequilibrium < aequilibris, evenly balanced < aequus (see EQUAL) + libra, a balance] 1. a state of balance or equality between opposing forces 2 …
83nitrogen cycle — series of flows in an ecosystem which move nitrogen between various stores and allow it to perform functions essential for life. At its simplest level, nitrogen in the form of nitrates is taken in by plant roots and built into proteins which… …
84transuranium element — Any of the chemical elements after uranium in the periodic table (with atomic numbers greater than 92). All are radioactive (see radioactivity), with half lives ranging from tens of millions of years to fractions of a millisecond. Only two,… …
85radioactivity — /ray dee oh ak tiv i tee/, n. Physics, Chem. the phenomenon, exhibited by and being a property of certain elements, of spontaneously emitting radiation resulting from changes in the nuclei of atoms of the element. Also called activity. [1895… …
86Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
87atom — /at euhm/, n. 1. Physics. a. the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical… …
88spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… …
89actinide element — ▪ chemical element group Introduction any of a series of 15 consecutive chemical elements in the periodic table from actinium to lawrencium (atomic numbers 89–103). As a group they are significant largely because of their radioactivity.… …
90quantum mechanics — quantum mechanical, adj. Physics. a theory of the mechanics of atoms, molecules, and other physical systems that are subject to the uncertainty principle. Abbr.: QM Cf. nonrelativistic quantum mechanics, relativistic quantum mechanics. [1920 25]… …
