The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ("periods") and columns...

Look up periodicity or periodic in Wiktionary, the free dictionary. Periodicity or periodic may refer to: Bott periodicity theorem, addresses Bott periodicity:...

A periodic function also called a periodic waveform (or simply periodic wave), is a function that repeats its values at regular intervals or periods....

Look up periodic table in Wiktionary, the free dictionary. The periodic table is a tabular arrangement of the chemical elements. Periodic table may also...

In chemistry, periodic trends are specific patterns that are present in the periodic table that illustrate different aspects of certain elements when grouped...

the periodic law in 1871, and published an associated periodic table of chemical elements, authors have experimented with varying types of periodic tables...

Periodic detention or weekend detention is a type of custodial sentence under which the offender is held in prison between Friday and Sunday evenings each...

polyserositis, periodic peritonitis, recurrent polyserositis, benign paroxysmal peritonitis, periodic disease or periodic fever, Reimann periodic disease or...

Extended periodic table Element 119 (Uue, marked here) in period 8 (row 8) marks the start of theorisations. An extended periodic table theorizes about...

Periodic abstinence may refer to: The use of fertility awareness as birth control Following the Roman Catholic Church's teachings on natural family planning...

is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table; the 14 f-block columns, between...

A block of the periodic table is a set of elements unified by the atomic orbitals their valence electrons or vacancies lie in. The term seems to have been...

A log-periodic antenna (LP), also known as a log-periodic array or log-periodic aerial, is a multi-element, directional antenna designed to operate over...

Quasiperiodicity is the property of a system that displays irregular periodicity. Periodic behavior is defined as recurring at regular intervals, such as "every...

second or the reciprocal of one second. It is used only in the case of periodic events. It is named after Heinrich Rudolf Hertz (1857–1894), the first...

Hypokalemic periodic paralysis (hypoKPP), also known as familial hypokalemic periodic paralysis (FHPP), is a rare, autosomal dominant channelopathy characterized...

Periodic limb movement disorder (PLMD) is a sleep disorder where the patient moves limbs involuntarily and periodically during sleep, and has symptoms...

153P/Ikeya–Zhang). "Periodic comet" is also sometimes used to mean any comet with a periodic orbit, even if greater than 200 years. Periodic comets receive...

Periodic fever syndromes are a set of disorders characterized by recurrent episodes of systemic and organ-specific inflammation. Unlike autoimmune disorders...

In mathematics, a periodic sequence (sometimes called a cycle or orbit) is a sequence for which the same terms are repeated over and over: a1, a2, ......

The periodic table is an arrangement of the chemical elements, structured by their atomic number, electron configuration and recurring chemical properties...

any displacement in time. Periodic waveforms repeat regularly at a constant period. The term can also be used for non-periodic or aperiodic signals, like...

of a radio frequency (such as a contract with a cell-phone provider). A periodic lease agreement (most often a month-to-month lease) internationally and...

mathematics, in the study of iterated functions and dynamical systems, a periodic point of a function is a point which the system returns to after a certain...

In mathematics, an almost periodic function is, loosely speaking, a function of a real number that is periodic to within any desired level of accuracy...

Periodic breathing is clusters of breaths separated by intervals of apnea or near-apnea. As opposed to normal breathing which is usually regular, periodic...

Periodic paralysis is a group of rare genetic diseases that lead to weakness or paralysis from common triggers such as cold, heat, high carbohydrate meals...

Climate. Island Press. ISBN 978-1-55963-703-9. Scerri, Eric (2007). The Periodic System, Its Story and Its Significance. New York: Oxford University Press...

Periodic poling is a formation of layers with alternate orientation in a birefringent material. The domains are regularly spaced, with period in a multiple...

functions are special kinds of meromorphic functions, that satisfy two periodicity conditions. They are named elliptic functions because they come from...