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: Colleagues: Rivals:
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!