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The Atom & its Parts Science 3 working physicist studying Astronomer
Particles strain the imagination Some measure less than a trillionth of a centimeter across Some may exist for only a trillionth of a second Time:1:50 WPM:66.6
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Smallest particle of a chemical
Molecules molecules Smallest particle of a chemical independent existence Single-atom unusual tendency Science 4 Time:2:14 WPM: 65.1
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The Supercontinent Science 5 Serious study
German meteorologist Alfred Wegener Serious study Dismiss by others Also Wegener Could be explained about India and the southern countries Had separated Gondwanaland Time:2:29 WPM: 68
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Steam Power Created steam James Watt history The age of steam
In ancient Greece Alexandria devices Machine 1 Time:2:10 WPM: 66.6
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The Human Brain In 1963 Sir John Eccles Human brain Novel prize
Mind 1 Novel prize Sir John Eccles In 1963 Human brain The human nervous system Sometimes compared Millions of miles of wire Time:2:27 WPM: 60.8
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