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Feb 16, 1020
Avicenna's The Canon of Medicine
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Feb 16, 1121
Al-Khazini variation of gravitation and gravitational potential energy
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Feb 16, 1543
Copernicus heliocentric model
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Johannes Kepler first two laws of planetary motion
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William Harvey Blood circulation
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Robert hooke discovers the cell
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Francesco Redi disproved idea of spontaneous generation
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Mikhail Lomonosov discovery of the atmosphere of Venus
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Antoine Lavoisier basis for chemistry, and the beginning of modern chemistry
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John dalton's atomic theory
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Matthias Schleiden all plants are made of cells
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Johann Gottfried Galle and Heinrich Louis d'Arrest discovery of Neptune
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Gregor Mendel Mendel's laws of inheritance, basis for genetics
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Radioactivity
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The Electron