Thomson Discovery

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Thomson Discovery

• ByNastasya, Nick and Aaron.

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Thomson Biography

• Thomson was born in Manchester England on
  December 18, 1856. He got a scholarship for
  Trinity College,one of the most prestigious of
  colleges of Cambridge university. He graduated
  second in his class for mathematics. He stayed in
  Cambridge trying to craft mathematical models
  that would reveal the nature of atoms and
  electromagnetic forces.Thomas married Rose Paget
  on January 22,1890. In 1906 he received the Nobel
  Prize in physics for his researches in discharge
  of electricity in gases. In 1918 he was the
  master of his old college. He died on august the
  30th ,1940.

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Thomson experiments

• He built a Cathode Ray tube. He wanted to see
  that if he bent the ray with a magnet he could
  separate the charge from the rays.
• The first experiment failed so he decided to try
  it a different way. If the charged particles are
  not surrounded by a conductor they should be able
  to normally curve as it moves through an electric
  field. He tried the experiment this way and the
  cathode ray did bend in an electric field after
  all.
• Through these experiments he discovered the
  electron.

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Atom Model

• Suggested model of atom as a sphere of positive
  matter in which electrons are positioned by
  electrostatic forces.
• Tried to estimate number of electrons in an atom
  from measurements scattering light of X, beta,
  and gamma rays.

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Teacher

• Many of his students ( Rutherford, Aston) went on
  to move and perfect his work.
• His work of measuring light rays initiated the
  research trajectory along which Ernest Rutherford
  added.
• His techniques of determining the nature of
  positively charged particles led to the
  development of the mass spectroscope, which was
  an instrument perfect by Francis Aston.