-
Jan 1, 1000
Democritus
In 400 B.C. Democritus proposed the idea that matter was not infinitely divisible -
Jan 1, 1000
Aristotle
368 B.C.
Developed the scientific method -
Jan 1, 1000
First use of nail polish
In 3000 B.C. China ladies came up with the invention of nail polish. They used flower petals and alum to make nail polish. -
Antoine Lavoiser
First Law of Conservation of Mass
-The total mass in a chemical reaction remains constant -
Joseph Proust
Law of Definite Porportion -
William Crooks
Cathode Ray: Led to discovery of television -
John Dalton
Came up with the Atomic Theory: All matter is composed of extremely small particles called atoms, different atoms combine in simpler whole number ratios to form compounds -
Amedeo Avogrando
First to propose that a gaseous element, oxygen, hydrogen, and nitrogen are diatomic molecule -
Deoderany
The inventor was from Philidelphia, The inventor trademarked his invention -
J.J. Thomson
Came to conclusion that the mass of the charged particles was much less then that of a hydrogen atom -
First basketball game played
It was invented by James Naismith and it was played at Springfield College. -
The Game of Volleyball
It was invented by William G. Morgan -
Henri Becquerel
Natural radioactivity -
Marie Curie
Isolates pure radium for the first time -
Max Planck
Recognized significance of the theory of relativity -
Albert Einstein
Theory of Relativity, atomic bond -
Hair Dye
Hair dye was invented by Eugene Schueller, the same guy who invented sunscreen -
Robert Millikan
Determined charge of an electron -
Ernest Ritherford
Concluded there was a nucleus and made a new nuclear atomic model -
Henrey Moseley
Discovered that atoms of each element contain a positive charge in their nuclei -
Niels Bohr
Published his model of the atomic structure
-Introduced the theory of electrons -
Q- Tips
Q-tips were invented by Leo Gerstenzang. He decided to make q-tips after he saw his wife wrap cotton on a toothpick. -
Louis de Brogile
Electrons could behave as waves under some conditions
Helped scientists understand that the atom didn't behave like the solar system -
Werner Heisenberg
Quantom mechanics
-Radiation emitted by the atom -
Erwin Schrodinger
Made an equation -
James Chadwick
Showed the nucleus contained a neutron -
Sunscreen
It was invented by Franz Greiter. It had an SPF of 2. -
McDonald's
The original McDonald's was founded in 1940. McDonald's didn't avcually open until 1955. -
Hairspray
It was developed from a resin-like substance that resembled shellac. -
Pizza Hut
It was founded by brothers, Dan and Frank Carney in their hometown Witchita, Kansas
