neutron filter

См. также в других словарях:

• Neutron emission — Neutron emitters to left of lower dashed line Z → 0 1 2 n ↓ n H He 3 4 0 1H Li Be 5 6 1 …   Wikipedia

• Neutron diffraction — Science with Neutrons Foundations Neutron temperature Flux · Radiation  …   Wikipedia

• Neutron activation analysis — Science with Neutrons Foundations Neutron temperature Flux · Radiation  …   Wikipedia

• rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …   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

• radiation measurement — ▪ technology Introduction       technique for detecting the intensity and characteristics of ionizing radiation, such as alpha, beta, and gamma rays or neutrons, for the purpose of measurement.       The term ionizing radiation refers to those… …   Universalium

• Die Entdeckung der Kernspaltung — Kaiser Wilhelm Institut für Chemie (heute: Otto Hahn Bau der Freien Universität Berlin) 52.44866613.3429597Koordinaten …   Deutsch Wikipedia

• Geschichte der Kernspaltung — Kaiser Wilhelm Institut für Chemie (heute: Otto Hahn Bau der Freien Universität Berlin) 52.44866613.3429597Koordinaten …   Deutsch Wikipedia

• 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

• Entdeckung der Kernspaltung — Kernspaltung des Uranatoms: Sonderbriefmarke der Deutschen Bundespost von 1979 …   Deutsch Wikipedia

• star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… …   Universalium