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Explosive > Radioactivity

The following information is about Radioactivity.

Radioactivity Defined

Radioactivity, the spontaneous disintegration or decay of the nucleus of an atom by emission of particles, usually accompanied by . Electromagnetic Radiation. Natural radioactivity is exhibited by several elements, including Radium and Uranium. The radiation produced is of three types: the alpha particle, which is a nucleus (two protons and two neutrons) of an ordinary helium atom; the beta particle, which is a high-speed electron or, in some cases, a positron (the electron's antiparticle); and Gamma Radiation, which is a type of electromagnetic radiation with very short wavelengths. The rate of disintegration of a radioactive substance is commonly designated by its half-life, which is the time required for one half of a given quantity of the substance to decay. Radioactivity may be induced in stable elements by bombardment with particles of high energy. Also Dating; Isotope.

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Off-site Radioactivity Links, User Submitted

The following links have been collected through user bookmark submission in the Radioactivity category. Please note, because these resources are off-site we cannot guarantee the accuracy or quality of any information.

Thu Jul 2

  • Solar ghosts may haunt Earth's radioactive atoms - 30 June 2009 - New Scientist: ""Wh at we are seeing may be the heartbeat of the sun," says Sanders. It means that carbon-14 data from Earth, as a proxy for the sun's neutrino activity, could allow us to determine the history of the sun's internal reactor stretching back thousands of years. Quite generally, if Fischbach and Jenkins should ultimately be proved right, nuclear decay would represent a powerful way to detect neutrinos - something that currently requires experiments on a huge scale - and a new type of telescope with which to peer inside the sun."

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Off-site Radioactivity Research Links

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