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James Chadwick and the Neutron

James Chadwick and the Neutron. By 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- Brown Daughter : Joanna Stewart Chadwick Batterham

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James Chadwick and the Neutron

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  1. James Chadwick and the Neutron By Jake Samson & Shai Zimmerman

  2. Who is James Chadwick? • Born: October 20, 1891 • Bollington, England • Death: July 24, 1974 (Age 82) • Cambridge, England • Spouse: Aileen Stewart- Brown • Daughter: Joanna Stewart Chadwick Batterham • Daughter: Judith Chadwick

  3. Who is James Chadwick? • Most significant work done: • Cavendish Laboratory, Cambridge • Colleagues: • Ernest Rutherford • E.S Bieler • Rivals: • None - Rutherford

  4. Achievements • Graduated 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

  5. 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

  6. 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

  7. Chadwick Diagram

  8. Awards • Knighted in 1945

  9. Other famous Knights

  10. Sir Sean Connery (James Bond)

  11. Sir Elton John

  12. Sir Paul McCartney

  13. Awards Continued • Hughes Medal of Royal Society • 1935 Nobel Prize in physics

  14. The Most Important Thing About the Discovery of the Neutron?

  15. Without it, there would be no…

  16. Jimmy Neutron!

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