resonance transition
101Inorganic chemistry — For the journal, see Inorganic Chemistry (journal). Inorganic compounds show rich variety: A: Diborane features unusual bonding B: Caesium chloride has an archetypal crystal structure C: Fp2 is an organometallic complex D …
102Vocal pedagogy — Vocal pedagogy, or voice pedagogy, is the study of the teaching of singing. Vocal pedagogists are people who study the teaching of singing. To some extent all voice teachers are vocal pedagogists because vocal pedagogy informs them about not only …
103electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …
104Metamaterial antenna — This Z antenna tested at the National Institute of Standards and Technology is smaller than a standard antenna with comparable properties. Its high efficiency is derived from the Z element inside the square that acts as a metamaterial, greatly… …
105Metal ions in aqueous solution — A metal ion in aqueous solution is a cation, dissolved in water, of chemical formula [M(H2O)n]z+. The solvation number, n, determined by a variety of experimental methods is 4 for Li+ and Be2+ and 6 for elements in rows 3 and 4 of the periodic… …
106PIANO — Dans le monde occidental, le piano est devenu, après la guitare, l’instrument le plus répandu dans le grand public. En effet, sa polyphonie et sa tessiture (possibilité de jouer plusieurs notes ensemble sur une grande étendue d’octaves) en ont… …
107Noble gas — Group 18 Period 1 2 He 2 …
108Rubidium standard — A rubidium standard is a frequency standard in which a specified hyperfine transition of electrons in rubidium 87 atoms is used to control the output frequency. A rubidium standard consists of a gas cell, which has an inherent long term… …
109Zeeman effect — The Zeeman effect (  /ˈzeɪm …
110Histoire de la théorie des cordes — Cet article résume l histoire de la théorie des cordes. La théorie des cordes est une théorie de la physique moderne qui tente d unifier la mécanique quantique (physique aux petites échelles) et la théorie de la relativité générale (nécessaire… …
