gamma neutron survey
21Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
22Industrial radiography — is the use of ionizing radiation to view objects in a way that cannot be seen otherwise. It is not to be confused with the use of ionizing radiation to change or modify objects; radiography s purpose is strictly viewing. Industrial radiography… …
23radioactivity — /ray dee oh ak tiv i tee/, n. Physics, Chem. the phenomenon, exhibited by and being a property of certain elements, of spontaneously emitting radiation resulting from changes in the nuclei of atoms of the element. Also called activity. [1895… …
24P-nuclei — (p stands for proton rich) are certain proton rich, naturally occurring isotopes of some elements between selenium and mercury which cannot be produced in either s or r process. Contents 1 Definition 2 Origin of the p nuclei …
25Outline of astronomy — Mauna Kea in Hawaii is one of the world s premier observatory sites. Pictured is the W. M. Keck Observatory, an optical interferometer. The following outline is provided as an overview of and topical guide to astronomy: Astronomy – studies the… …
26Scintillator — Scintillation crystal surrounded by various scintillation detector assemblies …
27Near-Earth supernova — Main article: History of supernova observation The Crab Nebula is a pulsar wind nebula associated with the 1054 supernova. It is located about 6,500 light years from the Earth.[1] …
28X-ray astronomy — X rays start at 0.008 nm and extend across the electromagnetic spectrum to 8 nm, over which the Earth s atmosphere is opaque. X ray astronomy is an observational branch of astronomy which deals with the study of X ray observation and detection… …
29Supernova nucleosynthesis — is the production of new chemical elements inside supernovae. It occurs primarily due to explosive nucleosynthesis during explosive oxygen burning and silicon burning.[1] Those fusion reactions create the elements silicon, sulfur, chlorine, argon …
30Hypernova — For the rock band, see Hypernova (band). Eta Carinae, in the constellation of Carina, one of the nearer candidates for a future hypernova Hypernova (pl. hypernovae), also known as a type 1c Supernova, refers to an incredibly large star that… …
