very close approximation
91Neutrino oscillation — is a quantum mechanical phenomenon predicted by Bruno Pontecorvo[1] whereby a neutrino created with a specific lepton flavor (electron, muon or tau) can later be measured to have a different flavor. The probability of measuring a particular… …
92Shakespeare, William — (baptized April 26, 1564, Stratford upon Avon, Warwickshire, Eng. died April 23, 1616, Stratford upon Avon) British poet and playwright, often considered the greatest writer in world literature. He spent his early life in Stratford upon Avon,… …
93Pell number — In mathematics, the Pell numbers and companion Pell numbers (Pell Lucas numbers) are both sequences of integers that have been known since ancient times. They are defined by a recurrence relation similar to that for the Fibonacci numbers, and… …
94Piphilology — Part of a series of articles on the mathematical constant π …
95Semi-empirical mass formula — In nuclear physics, the semi empirical mass formula (SEMF), sometimes also called Weizsäcker s formula, is a formula used to approximate the mass and various other properties of an atomic nucleus. As the name suggests, it is partially based on… …
96Ultrarelativistic limit — In physics, a particle is called ultrarelativistic when its speed is very close to the speed of light c, such that its total energy E^2 = m^2 c^4 + p^2 c^2 is almost completely due to its momentum (p c gg m c^2), and thus can be approximated by E …
97Rabi problem — The Rabi problem concerns the response of an atom to an applied harmonic electric field, with an applied frequency very close to the atom s natural frequency. It provides a simple and generally solvable example of light atom interactions.… …
98evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… …
99hydrosphere — /huy dreuh sfear /, n. the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere. [1885 90; HYDRO 1 + SPHERE] * * * Discontinuous layer of water at or near the Earth s surface. It… …
100chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… …
