James Chadwick and the Neutron
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Transcript of James Chadwick and the Neutron
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James Chadwick and the NeutronBy Jake Samson & Shai Zimmerman
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Who is James Chadwick?
Born: October 20, 1891 Bollington, England
Death: July 24, 1974 (Age 82) Cambridge, England
Spouse: Aileen Stewart- BrownDaughter: Joanna Stewart Chadwick BatterhamDaughter: Judith Chadwick
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Who is James Chadwick?
Most significant work done: Cavendish Laboratory, Cambridge
Colleagues: Ernest Rutherford
E.S Bieler
Rivals: None
- Rutherford
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AchievementsGraduated from Honours School of Physics
Manhattan Project Development of atomic bombs
1932: Made fundemental discovery! Existence of the NEUTRON!!!! (particle in an atom without electrical charge)
Added nitrogen to alpha particles with emission of a proton
First artificial nuclear transformation
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Manhattan Project
Atomic disentegration does NOT need to overcome an electric barrier.
Can penetrate and split heaviest elements
Fission of Uranium- 235 created atom bomb
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Discovery of the Neutron Chadwick’s set-up an experiment discovering neutrons
-alpha particles are projected towards a beryllium target
-the emitted particles fell on an object called paraffin wax
-once it fell on the paraffin wax, it released another type of particles
-that other type of particles were protons
-what went through the beryllium target were uncharged and had a similar mass to protons…called NEUTRONS
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Chadwick Diagram
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Awards
Knighted in 1945
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Other famous Knights
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Sir Sean Connery
(James Bond)
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Sir Elton John
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Sir Paul McCartney
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Awards Continued
Hughes Medal of Royal Society
1935 Nobel Prize in physics
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The Most Important Thing About the Discovery of the Neutron?
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Without it, there would be no…
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Jimmy Neutron!