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Isaac Newton theorized a mechanical universe with small, solid masses in motion.
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proposed that elements consisted of atoms that were identical and had the same mass and that compounds were atoms from different elements combined together.
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developed the two laws of electrochemistry.
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built one of the first cathode-ray tubes.
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created the periodic table
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proposed the theory of electromagnetism and made the connection between light and electromagnetic waves.
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theorized that electricity was comprised of negative particles he called electrons.
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experiments with cathode-ray tubes led him to confirm the work of earlier scientists by definitively demonstrating that cathode-rays have a negative charge.
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Discovered canal rays, which have a positive charge equal to an electron
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discovered x-rays.
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Gold Foil Experimentdiscovered radiation by studying the effects of x-rays on photographic film.
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determined the charge to mass ratio of electrons.
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gold foil experimentdiscovered alpha, beta, and gamma rays in radiation.
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came up with the term "isotope" to explain the unintentional breakdown of radioactive elements.
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came up with the term "isotope" to explain the unintentional breakdown of radioactive elements.
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proposed an atomic model called the Saturnian Model to describe the structure of an atom.
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found that inert gases have a “stable electron configuration.”
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invented a device that could detect alpha particles.
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discovered that the number of protons in an element determines its atomic number.
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used a mass spectrograph to identify 212 isotopes.
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proposed an atomic structure theory that stated the outer orbit of an atom could hold more electrons than the inner orbit.
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proposed that electrons have a wave/particle duality.
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created the first nuclear reaction, producing alpha particles
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proposed the existence of anti-particles.
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discovered neutrons, particles whose mass was close to that of a proton.
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discovered nuclear fission.
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discovered eight transuranium elements.
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created the first man-made nuclear reactor.
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Devin was born 17years later this special scientist made this timetoast
