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(BC) adopted the atomism of Leucippus and Democritus, maintaining that all objects and events—including human lives—are in reality nothing more than physical interactions among minute indestructible particles. As they fall toward the center of the earth, atoms swerve from their paths to collide with each other and form temporary compound beings.
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3000 BC
the wheel was invented -
(BC) Formulated an atomic theory for the cosmos. Same theorys as Leucippus.
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(BC) First greek to develop the theory of atomism, the idea that everything is composed entirely of various Imperishable, indivisable elements called atoms
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Proposed a mechanical universe with small solid masses in motion
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union of the governments of england and scottland under the tittle of great britain
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Discovery of hydrogen or what he called "inflammable air". He described the density of inflammable air, which formed water on combustion
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Recognized and named oxygen (1778) and hydrogen (1783), abolished the phlogiston theory, helped construct the metric system, wrote the first extensive list of elements, and helped to reform chemical nomenclature.
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the boston massacre. adams decide to defend the british soliders involved in the atack.
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french revolution babyy
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revolution baby, storming of the bastille
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Propsed on "atomic theory" with spherical solid atoms based upon measurable properties of mass.
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haiti declares its independance and becomes the second independent state in the western hemisphere
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Studied the effect of electricity on solutions, coined term electrolysis, as a splitting of molecules with electricty, develpoed
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the battle of bunker hill was intense
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Built one of the first gas discharge tubes (Cathode Ray Tube).
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Arranged elements into 7 groups with similar properties. He discovered that the properties of elements "were periodic functions of their atomic weights". This became know as periodic law.
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Propsed electrical magnetic feilds filled the void
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Discovered cathode rays had the following properties. Travel in straight lines from the Cathode, cause glass to fluoresce, impart a negitive charge to objects they strike. Are deflected by electric feilds and magnets to suggest a negative charge, cause pinwheels in their path to spin indicating they have mass.
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Used a CRT to study "Canal Rays" which had electrical and magnetic properties opposite of an electron.
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Proposed that electricity was made of discrete negative particles he called electrons.
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Used the idea of Quata Coliscrete (units of energy) to explain hot glowing matter.
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Doscovered that inert gases had a stable electron configuration which lead to their chemical inactivity.
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Developed an electrical device to "click" when hit with alpha particles.
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Oil Drop experiment determined charge (e=1.603x10*-19coulomb) and the mass (m=9.11x10*-19 gram) of an electron.
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Model of the atom, that explains the emission and absorption of radiation as transitions between stationary electronic states in which the electron orbits the nucleus at a definite distance.
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Veiwed electrons as eontinuos clouds and introducing "wave mechanics" as a mathmatical model of the atom.
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Proposed anti-particles. Anderson discovered the Anti-Electron
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using alpha particles, discovered a neutral atomic particle with a mass close to a proton, Thus was discovered the Neutron.
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Conducted experiments verifying that heavy elements capture neutrons and form unstable products which undergo fission. This process ejects more neutrons continuing the fission chain reaction.
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Conducted the first controlled cjain reaction releasing energy from the atoms nucleus.
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Playboy was invented
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great scientist is born.
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it was a bunch of events
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Roman empire crashed
