History of the Atom
... Based on earlier work by E. Goldstein (1886) Millikan, Thomson and coworkers proposed the presence of a positively charged particle called the proton Goldstein observed what he called canal rays while using a cathode ray tube with the rays traveling in the opposite direction of Thomson’s ...
... Based on earlier work by E. Goldstein (1886) Millikan, Thomson and coworkers proposed the presence of a positively charged particle called the proton Goldstein observed what he called canal rays while using a cathode ray tube with the rays traveling in the opposite direction of Thomson’s ...
Rutherford Model
... straight back. Rutherford stated, “It was as if you fired a shell at tissue paper and it came back and hit you.” ...
... straight back. Rutherford stated, “It was as if you fired a shell at tissue paper and it came back and hit you.” ...
Evolution of the Atomic Theory
... • 1. a large majority of alpha particles passed directly through the foil. • 2. few particles were deflected when shot at the foil. • 3. rarely, one particle would come back almost directly at the alpha source ...
... • 1. a large majority of alpha particles passed directly through the foil. • 2. few particles were deflected when shot at the foil. • 3. rarely, one particle would come back almost directly at the alpha source ...
1/3
... The Plethora of Particles Because one has no control over cosmic rays (energy, types of particles, location, etc), scientists focused their efforts on accelerating particles in the lab and smashing them together. Generically people refer to them as “particle accelerators”. (We’ll come back to the p ...
... The Plethora of Particles Because one has no control over cosmic rays (energy, types of particles, location, etc), scientists focused their efforts on accelerating particles in the lab and smashing them together. Generically people refer to them as “particle accelerators”. (We’ll come back to the p ...
Notes #3
... By emitting radiation atoms of one element can change into atoms of another element This happens because the nuclei is unstable Atoms gain stability by losing energy (ex. Pencil falling over) ...
... By emitting radiation atoms of one element can change into atoms of another element This happens because the nuclei is unstable Atoms gain stability by losing energy (ex. Pencil falling over) ...
File
... Atomic Structure & Properties: Day 2 1. The electron was discovered by a. Thomson b. Rutherford c. Democritus d. Einstein 2. Which observation led J.J. Thomson to conclude that negative particles existed within the atom? a. deflection of alpha particles b. atomic absorption spectra c. atomic emissio ...
... Atomic Structure & Properties: Day 2 1. The electron was discovered by a. Thomson b. Rutherford c. Democritus d. Einstein 2. Which observation led J.J. Thomson to conclude that negative particles existed within the atom? a. deflection of alpha particles b. atomic absorption spectra c. atomic emissio ...
Answers to Cyclotron Questions File
... How long would it take 80 keV protons to travel once round their path? How long would it take for those with half this energy? Circular motion theory gives us ...
... How long would it take 80 keV protons to travel once round their path? How long would it take for those with half this energy? Circular motion theory gives us ...
Presentation - Flemish Supercomputer Centre
... To see the structure of matter at a scale of 10-18 m and below we need probes with an energy of one TeV [= 1012 eV] or above. ...
... To see the structure of matter at a scale of 10-18 m and below we need probes with an energy of one TeV [= 1012 eV] or above. ...
IB HL Physics More Problems on Quantum and Nuclear Physics_
... In 1924, Davisson and Germer carried out an experiment in which electrons were accelerated through a potential difference of 54 V. The electrons were scattered at the surface of a nickel crystal. (i) ...
... In 1924, Davisson and Germer carried out an experiment in which electrons were accelerated through a potential difference of 54 V. The electrons were scattered at the surface of a nickel crystal. (i) ...
