BME 229 Lecture Notes - Lecture 1: Niels Bohr, Cathode Ray, Mass Number

• School: Ryerson University
• Department: Biomedical Engineering
• Course: BME 229
• Professor: Jahan Tavakkoli

Document Summary

English physicist: received nobel prize in 1906, usually considered the discoverer of the electron, worked with the deflection of the cathode rays in an electric field, opened up the field of subatomic particles. Ea(cid:396)l(cid:455) models of the ato(cid:373), ruthe(cid:396)fo(cid:396)d"s: rutherford, planetary model, based on results of thin foil experiments, positive charge is concentrated in the center of the atom, called the nucleus, electrons orbit the nucleus. 1885-1962: danish physicist, active participant in the early development of quantum mechanics, awarded the 1922 nobel prize in physics. For structure of atoms and the radiation emanating from them. The electron moves in circular orbits around the proton under the electric force of attraction: the coulomb force produces the centripetal acceleration. Coulo(cid:373)(cid:271)"s la(cid:449: fe = ke(cid:3044)(cid:3117)(cid:3044)(cid:3118)(cid:3045)(cid:3118, si unit of charge: coulomb (c, ke is called the coulomb constant, = 8. 9876x 109 n*m2/c2 = 1/(4 0) Boh(cid:396)"s model of ato(cid:373), (cid:1006: only certain electron orbits are stable, these are called stationary states.