- law of periodicity
- 周期律
Medical Chinese dictionary (湘雅医学词典). 2013.
Medical Chinese dictionary (湘雅医学词典). 2013.
periodicity — index frequency, regularity Burton s Legal Thesaurus. William C. Burton. 2006 … Law dictionary
law — 1. A principle or rule. 2. A statement of fact detailing a sequence or relation of phenomena that is invariable under given conditions. SEE ALSO: principle, rule, theorem. [A.S. lagu] Alexander l. states that a jerky nystagmus becomes worse when… … Medical dictionary
periodic law — /pear ee od ik, pear /, Chem. 1. the law that the properties of the elements are periodic functions of their atomic numbers. 2. Also called Mendeleev s law. (originally) the statement that the chemical and physical properties of the elements… … Universalium
frequency — noun common occurrence, commonness, continuity, crebritas, cycle, frequence, frequentia, periodicity, prevalence, rate, recurrence, regularity, regularity of recurrence, repetition, repetitiveness, succession, usualness Burton s Legal Thesaurus.… … Law dictionary
regularity — I noun balance, clockwork precision, conformity, congruity, consistency, constantia, even tenor, evenness, exactness, harmony, homogeneity, invariability, levelness, method, methodicalness, order, orderliness, ordo, periodicity, precision,… … Law dictionary
Theosophy — This article is about the philosophy introduced by Helena Blavatsky and the Theosophical Society. See Theosophy (history of philosophy) for other uses. The emblem of the Theosophical Society Theosophy, in its modern presentation, is a spiritual… … Wikipedia
Chemistry: A Volatile History — is a 2010 BBC documentary on the history of chemistry presented by Jim Al Khalili. It was nominated for the 2010 British Academy Television Awards in the category Specialist Factual. Contents 1 Episode 1 – Discovering the Elements 1.1… … Wikipedia
List of trigonometric identities — Cosines and sines around the unit circle … Wikipedia
chemical bonding — ▪ chemistry Introduction any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another … Universalium
Redshift quantization — is the hypothesis that the redshifts of cosmologically distant objects (in particular galaxies) tend to cluster around multiples of some particular value. Since there is a correlation of distance and redshift as expressed in Hubble s Law,… … Wikipedia
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