-
350
Aristotle
Created Greek theory of atoms being of different sizes, regular geometric shapes, and being in constant motion. (350 B.C) -
400
Democritus
Had the idea that matter was made up of minuscule, irreducible particles."Nothing exists except atoms and empty space. Everything else is opinion" (460BC)
https://www.youtube.com/watch?v=Q9zFWIfUHvc -
The American Revolution
The establishment of America as a nation all its own occurred from 19 April 1775 to October 1781. -
Antonie Lavoisier
Recognized and named Oxygen. Then Hydrogen in 1783 -
The Civil War
The causes of the Civil War are much more than slavery, but the sustenance or abolition of slavery was the result everyone watched for, and what all the politicians fought for. -
Joseph Proust
Discovered the law of constant composition. -
John Dalton
All matter consists of tiny particles, atoms are indestructible and unchangeable. -
Amadeo Avagadro
Made the molecular theory. -
Louisiana Purchase
The U. S. paid 60 million francs, and canceled French debts totaling another 18 million, for a grand total of 78 million francs, or about $15 million. -
William Crookes
He discovered the element Thallium. This led him indirectly to the invention of the radiometer in 1875.
https://www.youtube.com/watch?v=EUSBl0fNquw -
Assasination of Abraham Lincoln
John Wilkes Booth shot president Abraham Lincoln during a speach -
J.J. Thomson
Discovered atoms were not invisible. Suggested atoms are spheres of positively charged matter with negatively charged electrons surrounding them. -
Madame Curie
Discovered two elements, polonium and radium. https://www.youtube.com/watch?v=ZtjpJMKgcz4 -
Henri Becquerel
Discovered that radiation did not only come from the sun, and discovered spontaneous radioactivity. -
Ernest Ruthford
Theorized that atoms have their charge concentrated in a very small nucleus. -
Henry Hosely
Proposed that the atom contains in its nucleus a number of positive nuclear charges that is equal to its atomic number in the periodic table. -
Max Planck
Made the quantum theory. -
Albert Einstein
Developed the general theory of relativity, discovered the law of the photoelectric effect. -
Niels Bohr
Helped to develop the atom bomb in Britain and then in the US. Nobel Prize for Physics
https://www.youtube.com/watch?v=Ic8OnvRonb0 -
Robert Millikan
He was the first to give an accurate figure for the electric charge on an electron. -
Louis de Broglie
Proposed that electrons could behave as waves under some conditions. -
Werner Heisenberg
Discovered electrons do not travel in neat orbits, and contain photons. Uncertainty Principle.
https://www.youtube.com/watch?v=btH4DBvtB50 -
Erwin Schrodinger
Made equation which helped predict and calculate the energy of atoms as electrons move around. -
James Chadwick
English physicist who discovered the neutron. -
Manhattan Project
America became the first nation to complete the understanding of nuclear fission and developed the first weapon using this technology. -
Assassination of John F. Kennedy
The jury is still out, and probably will be for a very long time, as to why in the world Kennedy had to die. There are loads of conspiracy theories, most centering on the Chicago mafia. Lee Harvey Oswald is thought to have had help -
Apollo 11
American astronaught set foot on the moon -
Vietnam War
Vietnam War established something good: peace rallies. Tens of thousands of U. S. citizens paraded, marched, and crowded into various public places, especially Washington D. C., to protest the War, and these rallies worked. -
9/11
Osama bin Laden hijacked 4 commercial passenger jets and deliberately flew them into major American landmarks. (The Twin Towers) -
Death of Osama bin Laden
Bin Laden’s status the world over was virtually equivalent to Hilter's. American soldiers assasanated him in 2011.
