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Aristotle dies. He believed that all objects were composed of a potential (matter) and a reality (form). Believed universe had no beginning or end--eternal.
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Plato dies. He founded hte Academy. Used Empedocles element theort and identified each element with a regular solid. Fire=tetrahedron, air=actahedron, earth-=cube, water=icohedron. All properties of matter could be deduced thourgh thought w/o explanation. No experiments, just thinking.
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Democritus dies. Known for development of atomism to say taht atoms were solid bodies that were infinite in number, size, an shape, but could not be seen with naked eye. Thought everything emitted films of atoms and that our bodies recieved sensations from these.
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Leucippus dies. Influnced by Zeno. THought there were 2 different elemdnts: full or solid and empty or void. His theory for atomism stated that there were infinite atoms ahtat exist and are responsible for special properties of matter. Agreed with Parmenides that w/o space for motion there can be no motion.
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Empedocles dies. Belived that all things were made of 4 elements: Earth, Fire, Water, and Air:later developed by Aristotle and Plato. Conducted an experiment to show that air existed and wasn't just empt space(straw water example). He resasoned but didn't test that light traveled in finite velocity.
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Democritus born
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Dalton born
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US declares indepenednce form Great Britain.
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Nelson, New Zeland
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Dalton died. He is best remembered for discovering the Atomic Theory. He created 3 laws. 1st law is law of Multiple Proportions which is the fixed ratio law. The of Definite Composition which states that a compound contrains 2 or more elements compined in a def. propor. of mass. (NH3 example) The Law of Conservation of mass states that mass can't be created or destroyed but it can be rearranged.
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Born in Cheetham Hill(suburb of Manchester,England)
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born
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born in Omer, Nagasaki Prefecture,Japan
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born in Morrison, Illinois
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enrolled at Queens College in Manchester
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enrolled at Trinity College in Cambridge
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Thompson was Cavendish Professor of Experimental Physics at Cambridge from 1884 to 1918.
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elected Fellow of Royal Society
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born in Copenhagen, Denmark
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born
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He was awarded a scholarship to attend University of New Zeland in Wellington and Canterbury College.
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born in England
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born in France
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Majors in Mathematics and Physical Science. He experimented with radioactive elements and found that they have a half-life and can then eventually turn into other stable elements. Also claimed rodioactive elemets produce alpha and beta rays. He later came up with a model of an atom after the discovery of a nucleus.
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Went to Trinity College, Cambridge and studied under JJ Thompson; recieved a B.A. Research Degree
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archived original study of cathode rays culminating in discovery of the electron
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Joins Macdonald Chair of Physics at McGill University in Montreal, Canada
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E=h*f. Energy depends on frequency. E measured in J. Frequenct in Hz. h=Planck's constant in Joules per Hz(j-s). Planck's constant: 6.63x10^-34 j-s. Specific amt of energy required to knock electron out of orbit.
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born
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presented idea of kinetic theor of gases and the stability of Saturn's rings. Led to the question of electrons losing energy when they're constantly moving. To prove model=proving electrons aren't losing energy. The a more detailed model of an atom was realeased that agreed with Nagaoka. Proved electrons didn't loose energy as they went around the + nucleus.
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Returns to Europe to become a professor
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set up study to further knowledge on radiation.
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knighted
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attended Machester's University
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discovers atomic nucleus and developes atomic model. His atomic model is called the Planetary model with nucleus and orbiting electrons.Discovered proton and was first to make nuclear reaction. Mentored students rather than research himself.
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prof at Univ of Chicago
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Head of Kaiser Wilhelm Society
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Graduation from Honours School of Physics
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offered scholarship to study in Germany. He studied nuclear science and was later involved in the Manhattan Project which developed the atomic bomb.
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used Rutherford's model of atom as guide to study atomic structure
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Kinghted and thus becomes Lord Ernest Rutherford
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beginnig of war
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succeeded Sir Joseph Thompson
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awarded Nobel Prize for Physics. He created a new model of the atom with the nucleus and the orbitals with electrons. For rest of life he develoed peacefully-used atomic energy and dabbled in microbio.
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Nobel Prize for Physics to Millikan for Oil Drop experiment that was conducted from 1908 to 1917. Mist in chamber, hit with rays, attracted to + charged platechamber 1, electrons suspended in mid-air. Proved charge and size of electrons.
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discobered his wave equation which come for a dissatifaction with Bohr's orbit theory.
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awarded Nobel Prize for discovery that light behaves as both a wave and a particle.
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spark that started Great Depression
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wins Noble Prize for neutron-proton nucleus model.
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published book describing the proved existance of a neutron. He was awarded the Hughes Medal of the Royal Society in this same year.
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shared Nobel Prize with Paul Dirac
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wins Nobel Prize
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ashes buried in Westminster Abbey. Won many awards including Nobel Prize.
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World War II begins
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death date. recieved several awards and degrees form many institutions.
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Japanese bomb Pearl Harbor which throws the US into the Pacific Theatre of WWII
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Hitler commits suicide
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died
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Max Planck Society
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death date
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death date.
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death from long illness. Famous for QMM. principal quantum number=n. Location of electrons around nucleus. Determines allowd energies and electron can have and how to find most prob. location of electron.
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death date. Throughout life recieved several honorary docrorates from various universiteis such as Cambridge, Vienna, Oslo, Princeton, Harvard, etc.
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death date. Thoroughout his life he won several awards including the Nobel Prize for Physics in 1935
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died. Famous for uncertainty principle tht states that knowing exact position and momentum of electrons at the same time is impossible.
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Aristotle born
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born
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Born
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Born