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A good overview on the basics of radioactivity : the different types of radiation, sources, uses, dangers of radioactivity etc
A good website explaining ionizing radiation from the World Health Organisation
Page talking about intensity of radiation in roentgens and use with X -ray machines.
A description of Hawking radiation, which, theoretically, causes black holes to shrink.
A uniform background radiation in the microwave region of the spectrum is observed in all directions in the sky. It shows the wavelength dependence of a "black body" radiator at about 3 Kelvins ...
A basic explanation of Cherenkov Radiation from Encyclopedia Britannica.
A brief description of how Nuclear Radiation works from HowStuffWorks.com. Covering atomic structure, particles, radioactive decay, applications, naturally occurring isotopes.
In order to explain the frequency distribution of radiation from a hot cavity (blackbody radiation) Planck proposed the ad hoc assumption that the radiant energy could exist only in discrete quanta ...
Introduction to nuclear radiation, from howstuffworks.com.
The Planck radiation formula is an example of the distribution of energy according to Bose-Einstein statistics.
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