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During the Qin Dynasty, construction of the Great Wall of China begins.
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or so he thought.
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Said that if you cut something in half again and again, there will come a point that you cannot cut it in half anymore. He said that it was invisible, which in greek is atomos. Thus, the theory of the atom was born.
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Beleived that everything in the univers was made up of four elements. Air, Fire, Earth and Wind.
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Democritus thought that the atom was an invisible force that held everything togeather.
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Begins preaching in Mecca
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Was constructed in Norway
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He indeed discovered America
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Came up with the idea of small solid masses in motion in a mechanical universe.
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Internal spatial coordinates are used instead of external coordinates. Boscovich's theory is kinematic rather than dynamical. It uses only two-dimensional quantities rather than the three used by Newton.
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Best known for his discovery of oxygen (i giggled a little at that one) he was able to isolate it and identify it.
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Merged to become the United Kingdom
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Atoms are the smalles part of the element. Atoms of the same element have the same atomic mass. The ratio of the masses of the bonded elementes will always be a definite whole-number proportion.
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Developed by Dalton. Thought that the atom was shaped like this.
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Studied the effect of electricity on solution, coined term "electrolysis" as splitting molecules with electrisity, developed laws of electrolysis. Faraday himself was not a proponent of atomism.
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line was connected in the world between Baltimore and Washington
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Built one of the first gas discharge tubes. Also known as a Cathode Ray Tube.
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Discovered X-rays
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Found that if uranium was left on a photographic plate without any light, the ore would leave an image.
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Discovered the electron, and put forward a theory that the atom was made up of smaller particles. He proved this theory using the cathode ray tube.
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J.J. Thompson developed this model. He described the atom to be a mixture of positivly and negativly charged particles mixted togeather.
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Observed spontaneous disintegration of radioactive elements into variants he called "isotopes" or totally new elements, discovered "half-life", made initial calculations on energy released during decay.
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discovered new elements and conducted radiation test to understand how the elements reacted.
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Discovered the atom to be made up of a positive, solid core and an orbiting mass of electrons and neutrons. He did so by experimenting with a gold foil and an infinite particle emitter.
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His atomic theory was a combo of Rutherford's work and Planck's Quantom theory. Bohr proposed that the outer orbits could accommodate more electrons than the inner orbits
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Neils Bohr founded the model, he thought that the electrons orbited the positivly charged nucleus like the planets orbit the sun.
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Invented matrix mechanics, the first version of quantom mechanics. He extended this to complete a mathimatical theory of the behavior of atoms and their constituents.
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Werner Heisenberg found that the electrons just occupy a general area of space around the central positive nucleus.
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Set a foundation for wave-mechanics approch to quantum theory.
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Provided the existance of neutons as uncharged particles in atoms.
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Discovered the charge on an electron during the Oil Drop Experiment
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Revolt of the Italians who wanted Roman Citizenship.
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Revolt of Italians who wanted Roman Citizenship
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