James Chadwick and the Neutron
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Transcript of James Chadwick and the Neutron
James Chadwick and the NeutronBy Jake Samson & Shai Zimmerman
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
Who is James Chadwick?
Most significant work done: Cavendish Laboratory, Cambridge
Colleagues: Ernest Rutherford
E.S Bieler
Rivals: None
- Rutherford
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
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
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
Chadwick Diagram
Awards
Knighted in 1945
Other famous Knights
Sir Sean Connery
(James Bond)
Sir Elton John
Sir Paul McCartney
Awards Continued
Hughes Medal of Royal Society
1935 Nobel Prize in physics
The Most Important Thing About the Discovery of the Neutron?
Without it, there would be no…
Jimmy Neutron!