Electron Diffraction - History

History

The de Broglie hypothesis, formulated in 1924, predicts that particles should also behave as waves. De Broglie's formula was confirmed three years later for electrons (which have a rest-mass) with the observation of electron diffraction in two independent experiments. At the University of Aberdeen George Paget Thomson passed a beam of electrons through a thin metal film and observed the predicted interference patterns. At Bell Labs Clinton Joseph Davisson and Lester Halbert Germer guided their beam through a crystalline grid. Thomson and Davisson shared the Nobel Prize for Physics in 1937 for their work.

Read more about this topic:  Electron Diffraction

Famous quotes containing the word history:

    the future is simply nothing at all. Nothing has happened to the present by becoming past except that fresh slices of existence have been added to the total history of the world. The past is thus as real as the present.
    Charlie Dunbar Broad (1887–1971)

    This above all makes history useful and desirable: it unfolds before our eyes a glorious record of exemplary actions.
    Titus Livius (Livy)

    There are two great unknown forces to-day, electricity and woman, but men can reckon much better on electricity than they can on woman.
    Josephine K. Henry, U.S. suffragist. As quoted in History of Woman Suffrage, vol. 4, ch. 15, by Susan B. Anthony and Ida Husted Harper (1902)