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Civil War Begins
Often noted as the bloodiest war in U.S. History, the war began with a Confederate attack on Ft. Sumter. -
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Civil War
Often noted as the bloodiest war in U.S. History, the war began with a Confederate attack on Ft. Sumter and ended with a formal surrender at Appomatox Courthouse. -
Gettysburg Adress
The Gettysburg address was made by Abraham Lincoln to honor the fallen souls during the civil war. -
Law of Octaves
J.A.R. Newlands made a theory that, if placed in order of atomic weight, elements have similarities in groups of 7. -
President Lincoln Assasinated
On this day, John Wilkes Booth killed Abraham Lincoln in a theater. -
Andew Johnson Impeached
17th President Andrew Johnson was tried for many crimes and misdemeanors, getting impeached on this day. -
Mendeleev's Periodic Table
In this year, Dmitri Mendeleev made a table that aranged elements in order of atomic mass. The elements were divided by similarities, in a "Periodic" way. -
Proton Discovery
Using the Cathode Ray Experiment, Eugen Goldstein discovered positive-charged parts in an atom, which are known today as "protons." -
Electron Discovered
J.J. Thomson used the Cathode Ray experiment to study atoms, and he discovered little negatively-charged bits in the atom, which he called "corpsucles". These were later renamed to "electrons". -
Start of Spanish-American War
The Spanish were blamed for the destruction of Maine, and propaganda led to war. -
Plum Pudding Model
Found by J.J. Thomson, this model of the atom contained electron inside a ball of positive charge. It was proven wrong by the Gold Foil Experiment. -
San Francisco Earthquake
A horrible earthquake took place in San Francisco that started several fires, that raged on for many days. -
Rutherford gold foil experiments
These experiments involved shooting particles into a thin foil. These tests showed that the atom has a central nucleus, disproving the Plum Pudding Model of the Atom. -
RMS Titanic Sinks/Titanic Disaster
On this day, the ship Titanic hit an iceberg and sank, killing many people. -
Bohr's Model of the Atom
After the discovery of an atomic nucleus, Niels Bohr published a model of an atom with electrons orbiting a positively charged nucleus. -
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World War I
Archduke Franz Ferdinand was assassinated by 6 people, thus sparking a major war. -
Atomic Numbers
Henry Mosely discovered a pattern in X-ray results of atoms, and graphed it into a line. He found that each element has a special atomic number. -
Schordinger Equasion
Erwin Schrödinger created an equation that explains the changes to matter with time. -
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Great Depression
On this date, the stock market crashed, causeing a huge deflation, and leaving many citizens extremely poor. -
Neutron Discovered
Bothe and Becker smashed particles with beryllium, and discovered bits of the atom with no charge, which are known today to be neutrons. -
World War II Begins
Nazi Germany invaded Poland on this day, starting the second world war.