Created by gmacias on Dec 7, 2010
Last updated: 12/10/10 at 09:59 PM
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Discovered the quantum theory. Erwin helped to solve the location and energy of an electron in the hydrogen atom. He showed that the discrete energy states of Matter could be determined by Wave Equations.
Discovered the wave nature of an electron by assuming that because light had both particles and wave properties that it could also be true for matter. Broglie showed that every material has a wave. He's discovery had no downfall It gave the idea to Erwin Schrodinger to create a wave equation for quantum mechanics.
Discovered the Bohr model. Bohr discovered that the electrons moved around the nucleus of the atom on restricted orbits and explained the manner in which the atom absorbs and gained energy.He discovered this by looking at Rutherford’s idea of the structure of the atom. He saw that the electrons orbiting the nucleus where gaining energy when they were suppose to be loosing energy.
Discovered radioactivity and atomic nucleus. He did experiments with radiation and he split the atom that laid the foundation/creation of the nuclear warfare and power generation. He also split the nucleus of nitrogen atom with alpha particles. In one of Rutherford's experiment he shot alpha particles at a gold foil, but some particles bounced back, which was an unexpected result. Physics wanted to probe check the structure of matter by throwing electrons at a liquid hydrogen. They wanted to check what shape the protons had.
Worked with Ernest Rutherford to explain that radioactivity is due to the transmutation of element. Radioactive elements decay into other elements producing alpha, beta and gamma radiation. Radioactive elemets may have more than one atomic mass through the chem properties. Soddy named it Isotope (same place)
Inventor of quantum Theory. In 1899 there was a new fundamental constant use to calculate the energy of protons (light emitted from an element). When elements are heated the electrons get exited and start moving faster and sometimes move into higher energy levels.
First women to discover the metal radiant. She discovered that it was a treatment for cancer (killed cancer cells). Her family fallowed the tradition of science, her daughter worked with artificial radiation. Curie died of leukemia at age 68 which was caused by radiation poisoning.
Discovered the electron by a series of experiments designed to study the nature of electric discharge in a high vacuum-ray tube. J.J Thomson used the discharge of electricity through gasses to discover the electron. He interpreted the deflection of the rays, electrically charged plates and magnets, showing that there were bodies much smaller than an atom. He discovered that the electron's charge was negative.
Discovered the atomic theory. Dalton Studied the ratios in which elements were combined in chemical reaction. He's discovery gave a better understanding of nature in chemical reactions. Dalton also formulated the first volume of his new system of chemical philosophy and particle pressure. He also gave a better understanding of the atomic mass ( elements have different masses because of the unique atomic composition)
Thought matter could not be divided indefinitely, if you took a piece of matter and broke it in half and in half again and again then eventually there would no longer be able to break it apart. Democritus named the smallest particle of matter Atom.
Thought there was no smallest part of matter and that different substances were made up of portions of fire, air, earth and water
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