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Matter and Radiation

The Structure of The Atom
Atoms are tiny; the diameter of an atom is around 10e-11m (this notation means 10 to the
power of -11 meters). Ernst Rutherford set up an experiment in which he fired alpha particles
at gold foil and measured the deflection of the…

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The Strong Nuclear Force
There are 4 forces that act on matter. In order of decreasing strength they are: Strong nuclear force,
electromagnetic force, weak nuclear force and gravity. The strong force is responsible for holding nuclei together so
that we don't disintegrate. It must be stronger to overcome the…

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Gamma radiation is an electromagnetic wave emitted by a nucleus with too much energy after an alpha or beta
emission.

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