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Robert Boyle wrote a book titled the “Skeptic Chemist” which persuaded chemists to abandon the view that the elements are mythical things.
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Robert Boyle discovered that air is required for combustion, respiration, and sound.
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Constructed a mechanical universe that had small particles in motion.
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John Dalton stated that atoms can be neither created nor destroyed.
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Dalton suggested that the substances around us are made of a grouping of a specific number of atoms of different elements.
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Avogadro confirmed the idea that atoms of different elements joined in simple ratios form compounds.
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Plucker built the first gas discharge tube.
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James projected that electric and magnetic fields filled the void.
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Crookes developed the vacuum pump which allowed him to cathode ray tubes with a smaller residual gas pressure.
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Goldstein used a CRT to study ‘canal rays’.
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Becquerel discovered that some chemicals randomly decompose and give off very penetrating rays.
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Constructed the Raisin Pudding Model that showed that matter is electrically neutral and that electrons are much lighter than atoms.
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An oil drop experiment determined the charge and the mass of an electron.
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Rutherford proposed the name ‘proton’ for the positively charged particles of the nucleus.
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Cockroft and Walton built an early linear accelerator and bombarded lithium with protons to produce alpha particles.
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Dirac proposed anti-particles.
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Using alpha particles Chadwick discovered a neutral atomic particle in the nucleus with a mass almost the same as a proton. Thus the neutron was discovered.
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Enrico conducted the first controlled chain reaction by releasing energy from the atoms nucleus.
