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Jan 1, 1520
Elexir of life
chemistry history Attempt to find a cure to all illnesses throughout the world image from http://www.redbubble.com/people/jriphotography/art/2494226-elixir-of-life -
The Proficience and Advancement of Learning
chemistry history
SIr Francis Bacon published The Proficience and Advancement of Learning, which had descrpitions of the scientific method
image from http://www.google.com/imgres?q=SIr+Francis+bacon&hl=en&safe=active&gbv=2&biw=1366&bih=624&tbm=isch&tbnid=Abw-42aM7c-1HM:&imgrefurl=http://en.wikipedia.org/wiki/Francis_Bacon&docid=_cHIoqEzleAAsM&imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Franci -
Dalton's Atomic Theory
atomic theory
John Dalton published the Atomic Theory states that all matter is composed of atoms, which are small and indivisible. -
The first Vaccum Tube
vacuum tubeHeinrich Geissler creates the first vacuum tube.
image from http://www.resistors-and-diodes-and-picchips-oh-my.co.uk/?p=672 -
Protons
Proton info
Eugene Goldstein discovered positive particles by using a tube filled with hydrogen gas. It had a positive charge and was named the proton -
Pitchblend
Pitchblend
Henri Becquerel was studying the fluorescence of pitchblend when he discovered a compound of pitchblend. Pitchblend gave a fluorescent light with or without sunlight. -
Joseph John Thomson
Joseph ThomsonThompson discovered the electron and purposed the idea that the atom is a sphere of positive matter in which the electrons are positioned by electromagnetic forces. -
Ernest Rutherford
Ernest RutherfordErnest Rutherford
Ruherford did a serice of experiments including shooting alpha particals into gas atoms. A few atoms were diflected implying a dense, positivly charged central region containing most of the mass of the atom. -
Niels Bohr
Niels Bohr's interpretation of the atom
Bohr proposed the theory that the nucleus of the atom is positivly charged and the surrounding electrons are negativly charged. He also suggested that the outer electron levels can hold more than the inner levels. Photo Citation
http://www.lucidcafe.com/library/95oct/nbohr.html
