Fall.2008.MMA.Mylett.Timeline

Paul Mylett John Freeman

__Ancient 450 AD+ Prior__

Leucippus (500 b.c.-450 b.c.) Not to much is known about Leucippus or his life. No one really knows where he was born but it is said he may have been born in Miletus, Elea, Italy and Abdera. He has been created as being the first person to study the atomic theory through the writing of Aristotle and theophratus. He is known to be the teacher of Democritis.

Democritis was a greek scientist. He believed that all matter was made up of tiny industructable units called atoms. In his theory atoms remain unchanged but move about in space to combine in various ways to form all miscroscopic objects. The characteristics of his findings are objects are determined by shape. He said the universe was made of two elements atoms and void. He did not create the theory he that he believed in he learned about it from Leucippus who was the author of Big Cosmology.
 * DEMOCRITIS** (494 b.c.- 404 b.c)

Aristotle claimed that their was no smallest part of matter. Also he said that different substances and they were made up of different proportions of fire, air, and water. There was no way to test his theory that was proposed in 400 B.C. because people liked Aristotles philosiphy.
 * Aristotle** (384- 322 B.C.)

__1700-1800__

He was born the year Galileo died. Newton while attending school the plaque reached his school and it was closed but he returned to that same school to years later when they re-opened it. He said "Matter is fromed of a solid mass in penetrable particles of some size which combine in various ways to produce substance." Newton was also known for his law of gravitation and his three laws of motion.
 * Newton** (1642-1727)

He served a large part in events prior the French Revolution. Served on a commitee concerned with social conditions and recommended remedies for the state prisons and hospitals. He was executed in 1794. Known as the father of modern chemistry. Showed that mass of the products in a reaction are equal to the mass of the reactants this is known as the Law of Conservation of Mass.
 * Antoine Laurent Lavoisier** (1743-1794)

He studied in France and was cheif Apothecary at saltpetriere Hospital. In 1799 Proust formulated law of definite proportions. Used Copper Carbonate as the example saying it required fixed proportions of copper and oxygen in all the molecules. Prous law was later used by John Dalton for his suppor of his atomic theory.
 * Proust** (1754-1826)

__1800-1875__

Dalton was born in Cumberland, England. He was a teacher for most of his life and is known for being very interested in meterology. He even wrote a book on the subject of Meteorology. This is how Dalton arrive at his view for atomism. He calculated atomic weights from compositions and compounds using and arbitrary system to determine atomic structure for each compound.
 * Dalton** (1766-1844)

He was a book binder who became interested in Electricity. He discovered magnets would revolve around currency beary wire by which he proposed magnetism was a circular force. He formulated second law of electrollysis which is "Amounts of bodies which are equivalent to each other in their ordinary chemistry maturaly associated with them."
 * Faraday**( 1791-1867)

He was born in Scotland. In 1841 began formal schooling at endinborgn academy. Although he was always absent from school due to illness he still was a good student and produced his first scientific paper at the age of 15. He believed that rings around saturn were neither solid or fluid but were made up of seperate small particles. He also thought that xrays are a form of electro magnetic waves.
 * James Clerk Maxwell** (1831-1879)

__1875-1900

__ He was born in Germany and tried to go to the University of Utrecht in 1865 for physics but did not meet the standard or you could say did not have the grades. So he attended Zurich and recieved a Ph. D. He is known for using his wifes hand in his expirament in which he developed a way to see through your skin and was the early founder of xrays. He recieved a nobel prize in 1901 for his discovery of remarkable rays which which were named after him.
 * Willhelm Roentgen** (1845-1923)

He was from France and was a member of family known for being scholars and scientist. He discovered that rays camed from uranium which caused gases to ionize and differ from xrays in that they could be deflected by electric or magnetic fields. He had a son who ended up being the fourth generation of scientist in the family. He also recieved a nobel prize for physics in 1903 for his discovery of spontaneous radioactivity.
 * Antoine Henri Becquerel** ( 1875-1900)



He was born in the UK he won the atom prize in 1884 for his early interests in atomic structure which was reflected in his treatise on the motion of Vortex Rings. He was knighted in 1908 and also recieved numerous medals for his teachings. He is known for his plum pudding model he said that negatively charged electrons were embeded in a sphere of positively charged so that they were balanced. He discovered a method for seperating atoms and molecules by the use of positive rays. He recieved the nobel prize in physics in 1906 "in recognition of the great merits of his theoretical and experimental investigations on the conduction of electricity by gases."
 * JJ Thomson** (1856-1940)

Marie Curie** (1867-1934) She was born in Warsaw, Poland on November 7th she was known for her services to the advancement of chemistry with the discovery of the elements of radium and polonium. She worked along with her husband in poor living conditions in lab and to this day it is truely amazing that a women did what she did at a time when women scientist were not highly looked upon. She recieved the nobel prize in 1935 for chemistry.
 * [[image:http://www.achievement.org/achievers/eli0/large/eli0-030.jpg width="203" height="243"]]

__1900-1915

__

He was born in the US he was a son of a reverend. He entered Oberlin College in Ohio 1868 after being a court reporter. He graduated in 1891 and after graduation he was an elementary teacher in physics for two years. Milikan was known for his oil drop expirament when he took oil and hooked up two plates one positively charged and the other negatively and he saw where the oil took seeing what the charge was it was negative. He was known for exploring between ultraviolet and x radiation ultimatly let to his signifigant studies of cosmic radiation. In 1923 he recieved a "nobel prize for his work on elementary charge of electricity and on the photo electric effect".
 * Robert Milikan** (1868-1953)



He was born in Nelso, New Zeland he came from a family of 7 sons and 5 daughters. In 1889 recieved a scholarship and attended the University of New Zeland. Before Rutherford there was another theory of a structure of an atom and that was JJ Thomsons plum pudding model. Rutherford tested this model by using his own expirament in which he fired alpha particles at golf foil most went straight through but some did not. Even some of the particles bounced completely back. He also Recieved the nobel prize in 1908 for investigation into disintegration of the elements and chemistry of radioactive substances.
 * Ernest Rutherford** (1871-1937)



He was born in Copenhagen on October 7, 1885 he was the son of Christian Bohr. He was a professor at Copenhagen University. He worked under JJ Thomson. He introduced concepts from the quatum theory. He recieved a nobel prize fro his recognition of the atom. His model shows that the outer orbits could hold more electrons and the electrons in the outermost shell could determine the properties of an atom.
 * Niels Bohr** (1885-1962)



He was born in He was awarded the Nobel Prize in physics in 1932 for his creation of quantum mechanics which led to discovery of the alltropic from of hydrogen. At the end of World War II he was detained with other German Scientist and sent to England but in 1946 went back to Germany with his colleagues recognized insitute of physics at Gottingen.
 * Werner Heisenberg** (1901-1976)

He was born in Austria he attended the University of Vienna. He married the daughter of his chemistry Proffessor. He recieved the nobel prize in 1933 "for the discovery of new productive forms of atomic theory". His great discovery was known as the Schrodinger wave equation he was disatisfied with the Bohr Orbit theory.
 * Erwin Shrodinger** (1887-1961)

He was also from the UK and played a major part with Erwin Schrodinger. Dirac was elected a s a fellow of the Royal Society in 1930, he was awarded the Society's Royal Medal and the Copley Medal. Dirac was known for his famous wave equation which he introduced special into Schrodinger equation.
 * Paul Adrien Maurice Dirac** (1902-1984)

He was born in Chesire, England. He graduated Manchester University in honors physics in 1911. He spent the next two years of his life as a Professor Later Lord Rutherford in a physics labritory. He worked under Rutherford and was involved with the first Nuclear transformation. He proved the theory of Nuetrons. Using new tools he split the heaviest elements by using neutrons that have no charge this led to the splitting of uranium which led to the Atomic bomb. He recieved a Nobel prize in physics in 1935.
 * James Chadwick** (1891-1974)