Periodic current reversal — (PCR) is a current modulation technique that can be used in various electrochemical processes.In the most basic sense PCR simply means that the electrical current applied to the cell is reversed periodically but unlike pure AC the average (nett)… … Wikipedia
Periodic table — This article is about the periodic table of the elements . For other uses, see The Periodic Table. The periodic table of the chemical elements (also known as the periodic table or periodic table of the elements) is a tabular display of the 118… … Wikipedia
Periodic law — Law Law (l[add]), n. [OE. lawe, laghe, AS. lagu, from the root of E. lie: akin to OS. lag, Icel. l[ o]g, Sw. lag, Dan. lov; cf. L. lex, E. legal. A law is that which is laid, set, or fixed; like statute, fr. L. statuere to make to stand. See… … The Collaborative International Dictionary of English
Periodic table block — A block of the periodic table of elements is a set of adjacent groups. The respective highest energy electrons in each element in a block belong to the same atomic orbital type. Each block is named after its characteristic orbital; thus, the… … Wikipedia
Extended periodic table — There are currently seven periods in the periodic table of chemical elements, culminating with atomic number 118. If further elements with higher atomic numbers than this are discovered, they will be placed in additional periods, laid out (as… … Wikipedia
Hypokalemic periodic paralysis — Infobox Disease Name = Hypokalemic periodic paralysis Caption = DiseasesDB = 6465 ICD10 = ICD10|G|72|3|g|70 ICD9 = ICD9|359.3 ICDO = OMIM = 170400 MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = D020514 Hypokalemic periodic paralysis is a … Wikipedia
Hyperkalemic periodic paralysis — Infobox Disease Name = Hyperkalemic periodic paralysis Caption = DiseasesDB = 6252 ICD10 = ICD10|G|72|3|g|70 ICD9 = ICD9|359.3 ICDO = OMIM = 170500 MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = D020513 Hyperkalemic periodic paralysis… … Wikipedia
osteoarthritis — /os tee oh ahr thruy tis/, n. Pathol. the most common form of arthritis, usually occurring after middle age, marked by chronic breakdown of cartilage in the joints leading to pain, stiffness, and swelling. Also called degenerative joint disease.… … Universalium
Phase velocity — periodic gravity waves on the surface of deep water. The red dot moves with the phase velocity, and is located at a fixed wave phase: the crest for the case shown.The phase velocity (or phase speed) of a wave is the rate at which the phase of the … Wikipedia
china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material … Universalium