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hyperphysics

Cosmic Background Radiation

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 ...

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http://hyperphysics.phy-astr.gsu.edu/hbase/bkg3k.html#c1

How Nuclear Radiation Works

A brief description of how Nuclear Radiation works from HowStuffWorks.com. Covering atomic structure, particles, radioactive decay, applications, naturally occurring isotopes.

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http://www.howstuffworks.com/nuclear.htm
hyperphysics

Planck's Hypothesis

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 ...

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http://hyperphysics.phy-astr.gsu.edu/hbase/mod2.html#c3

How Nuclear Radiation Works

Introduction to nuclear radiation, from howstuffworks.com.

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http://science.howstuffworks.com/nuclear.htm
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Radiation dose chart

A simple chart illustrating the ionising radiation dose a person can receive from various different sources.

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http://xkcd.com/radiation/
hyperphysics

Planck Radiation Formula

The Planck radiation formula is an example of the distribution of energy according to Bose-Einstein statistics.

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http://hyperphysics.phy-astr.gsu.edu/hbase/mod6.html#c3
hyperphysics

Hyperphysics - Absorbed Dose of Radiation

Definition and units of absorbed dose and the biological effectiveness of radiation.

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http://hyperphysics.phy-astr.gsu.edu/hbase/nuclear/radrisk.html#c5

Biography of Charles Glover Barkla

Charles Glover Barkla (1877 - 1944) received the Nobel Prize for Physics in 1917 for his comprehensive research into the nature of radiation, in particular secondary radiation.

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http://nobelprize.org/nobel_prizes/physics/laureates/1917/barkla-bio.html

COBE Satellite

NASA's Cosmic Background Explorer satellite was launched to explore the cosmic microwave background radiation. It has discovered fluctuations in that radiation which are important to big bang ...

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http://hyperphysics.phy-astr.gsu.edu/hbase/bkg3k.html#c6

How Nuclear Medicine Works

A brief description of how Nuclear Medicine works. The pages address broad areas of medical use of radiation: PET, MRI scanners, SPECT, cardiovascular and bone scanning, treatment, radiation therapy.

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http://www.howstuffworks.com/nuclear-medicine.htm
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