Atom Timeline

1704 Isaac Newton Proposed a mechanical universe with small strong raft in motion. 1803 John Dalton Proposed an atomic theory with world(a) solid atoms based upon measurable properties of upsurge 1832 Michael Faraday Studied the do of electrical automobileity on solutions, coined term electrolysis as a change integrity of molecules with electrical energy, developed laws of electrolysis. Faraday himself was non a proponent of atomism. 1859J. PluckerBuilt one of the first-year gas discharge tubes (cathode re tube).1869Dmitri MendeleevArranged elements into 7 groups with same properties.  He observed that the properties of elements  were occasional(a) functions of the their atomic weights.  This became known as the weekly Law.1873James Clerk MaxwellProposed electric and magnetised fields filled the void.1879Sir William CrookesDiscovered cathode rays had the pursual properties: travel in straight lines from the cathode; manage glass to glow; imp art a ban charge to objects they strike; argon deflected by electric fields and magnets to suggest a negative charge; cause pinwheels in their path to spin indicating they lease mass.1886E. GoldsteinUsed a cathode-ray tube to study provide rays which had electrical and magnetic properties opposite of an electron.1894G.J.

StoneyProposed that electricity was made of discrete negative particles he called electrons . (Link to info on electrons)1895Wilhelm RoentgenUsing a cathode-ray tube he spy that nearby chemicals glowed. promote experiments found genuinely penetrating rays sexual climax from the CRT that were not deflected by a magne tic field. He named them X-rays.1896Henri Be! cquerelWhile studying the effect of x-rays on photographic film, he discovered some chemicals ad lib decompose and give off very pentrating rays.1897J.J. ThomsonUsed a CRT to experimentally determine the charge to mass ratio (e/m) of an electron =1.759 x 10 8 coulombs/gram.1897J.J. ThomsonStudied canal rays and found they were associated with the proton H +...If you want to get a secure essay, order it on our website: BestEssayCheap.com

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