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The top documents tagged [mysterious rays]
Radioactivity and nuclear transformation
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Radiation Physics
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Deep Time: An Introduction to Geologic Time. How far back into your family history can you remember? Maybe 100 years? My Grandfather
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The Evolution of the Atom Click here to see more
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Radioactivity. Henri Becquerel In 1896, Becquerel observed that uranium compounds emitted a penetrating radiation that passed through paper and affected
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Chapter 7-1
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Atoms Chapter 4
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Chapter 4
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