Photons — Photon Photon Photons émis dans le faisceau cohérent d’un laser Propriétés générales Classification Boson Composition Élémentaire Groupe … Wikipédia en Français
CENBOL — or CENtrifugal pressure supported BOundary Layer refers to the region of an accretion flow around a black hole. The basic idea is that since the centrifugal force l2/r3 increases very rapidly compared to the gravitational force (which goes as… … Wikipedia
Infraparticle — In electrodynamics and quantum electrodynamics, in addition to the global U(1) symmetry related to the electric charge, we also have position dependent gauge transformations. Noether s theorem states for every infinitesimal symmetry… … Wikipedia
Infrared divergence — In physics, an infrared divergence is a situation in which an integral, for example a Feynman diagram, diverges because of contributions of objects with very small energy approaching zero, or, equivalently, because of physical phenomena at very… … Wikipedia
infraparticle — noun An electrically charged particle and its surrounding cloud of soft photons … Wiktionary
spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… … Universalium
Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… … Universalium
X-ray — [ 22 December 1895 and presented to Professor Ludwig Zehnder of the Physik Institut, University of Freiburg, on 1 January 1896. The dark oval on the third finger is a shadow produced by her ring. [cite book last = Kevles first =Bettyann Holtzmann … Wikipedia
materials science — the study of the characteristics and uses of various materials, as glass, plastics, and metals. [1960 65] * * * Study of the properties of solid materials and how those properties are determined by the material s composition and structure, both… … Universalium
Medical radiography — Diagnostics ICD 10 PCS B?0, B?1, B?2 ICD 9 CM 87 … Wikipedia