Radioactivity definition

Radioactivity means the transformation of unstable atomic nuclei by the emission of radiation.
Radioactivity means the spontaneous, uncontrollable disintegration of the nucleus of an atom with the emission of particles and rays.
Radioactivity means emission of electromagnetic energy or particles or both during the transformation of unstable atomic nuclei.

Examples of Radioactivity in a sentence

  • Schumann (U Zürich) – XENON & DARWIN 17 The next step: XENON1T 1.9m● 2.4t LXe ("1m³ detector") 1t fiducial mass1.05m0.95m● 100x lower background(10 cm self shielding, materials)● Timeline: 2010 – 2015● start construction end of 2011 1.3mLow Radioactivity Photon Detectors (3”, Total ~250)Ti Cryostat(or low rad.

  • In: International Conference on Environmental Radioactivity in the Mediterranean Area; 10-13 May 1988; Barcelona, Spain; Madrid: Sociedad Nuclear Espanola; 1988.

  • Radioactivity was detected in melanin-containing tissues (the choroid, ciliary body, and iris) at the final sampling time (840 hours postdose) in a pigmented rat quantitative whole-body autoradiography (QWBA) study; however, there was no toxic finding on eyes in 4-week toxicity studies in rats and monkeys.

  • Kozima (Shizuoka Univ.), "On the Reduced Radioactivity of Tritium Absorbed by Titanium," pp 45-48, 15 refs.

  • Participation in any terrorist activity, riot, civil commotion, rebellion or war.2. Radioactivity or nuclear explosion.


More Definitions of Radioactivity

Radioactivity means the transformation of unstable atomic nuclei by the emission of radiation. "Radiobioassay" (See "Bioassay").
Radioactivity means the disintegration of unstable atomic nuclei with the emission of radiation.
Radioactivity means the transformation of unstable atoms by the emission of radiation. (138) (139) "Radiography" means the same as industrial radiography.
Radioactivity means ionizing radiations from or contamination by radioactivity from nuclear fuel, nuclear waste, or the radioactive properties of any nuclear installation, reactor or other nuclear assembly.
Radioactivity means the disintegration of unstable atomic nuclei by emission of
Radioactivity means a condition related to various types of radiation emitted by natural radioactive minerals that occur in natural deposits of rock, soils and water.
Radioactivity means the property of certain isotopes of the basic elements of spontaneously emitting nuclear particles or gamma radiation or of emitting x-radiation following orbital electron capture or of undergoing spontaneous fission.