delayed gamma radiation
61James Webb Space Telescope — General information Organization NASA[1], with significant contributions from ESA and CSA …
62Introduction to quantum mechanics — This article is an accessible, non technical introduction to the subject. For the main encyclopedia article, see Quantum mechanics. Quantum mechanics …
63physical science, principles of — Introduction the procedures and concepts employed by those who study the inorganic world. physical science, like all the natural sciences, is concerned with describing and relating to one another those experiences of the surrounding… …
64International Space Station — ISS redirects here. For other uses, see ISS (disambiguation). International Space Station …
65electromagnetism — /i lek troh mag ni tiz euhm/, n. 1. the phenomena associated with electric and magnetic fields and their interactions with each other and with electric charges and currents. 2. Also, electromagnetics. the science that deals with these phenomena.… …
66occupational disease — 1. Also called industrial disease. a disease caused by the conditions or hazards of a particular occupation. 2. a trait or tendency that develops among members of a particular profession: Cynicism was thought to be an occupational disease of… …
67Calendar of 1998 — ▪ 1999 January January 1 At the stroke of the new year, the Russian ruble is worth a thousand times less than before as three zeros are removed from its value; about six new rubles equal one U.S. dollar. Foreign Minister David Levy… …
68Mir — This article is about the Soviet/Russian space station. For other uses, see Mir (disambiguation). Mir …
69Nuclear bombs and health — The medical effects of a nuclear blast upon humans can be put into four categories: the initial stage, the first 1 2 weeks, the greatest amount of deaths are in this period with 90% due to thermal injury and or blast effects and 10% due to… …
70drug — drug1 /drug/, n., v., drugged, drugging. n. 1. Pharm. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well being. 2. (in federal law) a. any substance… …
