The measuring the e/m ratio of an electron was very important to physics at the beginning of the 1900s. It allowed scientists to gain a better understanding of this newly discovered particle at that time.

Objectives of the video :
1. To measure the deflection of an electron beam in
a crossed electric and magnetic field and
determine the charge-to-mass ratio.
2. Solved problems given.

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Thumbnail: Determination of the Ratio e to m (specific charge)