Mason Skovgard Timeline

Democritus

400

Democritus hypothesized that atoms cannot be destroyed, differ in size, shape and temperature, are always moving, and are invisible.

Aristotle

410

He thought that all materials on Earth were not made of atom

Antonie Lavosier

Oct 2, 1772

Atoms are neither created nor destroyed in a chemical reaction.

John Dalton

Oct 2, 1777

It states an element is one of a kind (aka pure) because all atoms of an element are identical.

Joseph Proust

Oct 2, 1794

This law states that a compound is composed of exact proportions of elements by mass regardless of how the compound was created.

Amadeo Avagadro

Oct 2, 1811

The hypothesis states that at the same temperature and pressure, equal volumes of gases contain the same number of molecules or atoms.

Cubs established

Oct 2, 1870

William Crookes

Oct 2, 1879

Disovered that cathode rays had the following properties: travel in straight lines, cause glass to fluoresce, and impart a negative charge to objects they strike

Henri Becquerel

Oct 2, 1896

discovered this phenomenon while experimenting with uranium and a photographic plate.

J.J. Thomson

Oct 2, 1897

Used a CRT to experimentally determine the charge to mass ratio od an electron

Madame Curie

Oct 2, 1898

Studied uranium and thorium and called their spontaneous decay process "radioactivity".

Max Planck

Oct 2, 1900

used the idea of quanta (discrete units of energy) to explain hot glowing matter.

Albert Einstein

Oct 2, 1905

Calculates how the movement of molecules in a liquid can cause the Brownian motion.

Last Cubs championship

Oct 2, 1908

Ernest Rutherford

Oct 2, 1911

He established that the nucleus was: very dense,very small and positively charged

Henry Moseley

Oct 2, 1914

Using x-ray tubes, determined the charges on the nuclei of most atoms.

Niels Bohr

Oct 2, 1922

Developed an explanation of atomic structure that underlies regularities of the periodic table of elements.

Louis deBroglie

Oct 2, 1923

Discovered that electrons had a dual nature-similar to both particles and waves.

Werner Heisenberg

Oct 2, 1927

Described atoms by means of formula connected to the frequencies of spectral lines.

Erwin Schrodinger

Oct 2, 1930

Viewed electrons as continuous clouds and introduced "wave mechanics" as a mathematical model of the atom.

James Chadwick

Oct 2, 1932

Using alpha particles discovered a neutral atomic particle with a mass close to a proton aka the neutron

Marvel Comics Established

Oct 2, 1939

Patriots established

Oct 2, 1960

Nike established

Oct 2, 1964

Erik Birthday

Oct 2, 1971

Erik Birthday

Oct 2, 1971

Jeanan Birthday

Oct 2, 1973

Miracle on ice

Oct 2, 1980

Mason Birthday

Oct 2, 2000

Reagan Birthday

Oct 2, 2002