Measuring the e/m Ratio
The measuring the e/m ratio of an electron was very important so physics could gain a better understanding of this particle.
In the 1900s, measuring the e/m ratio of an electron was very important for physicists to gain a better understanding of this newly discovered particle. The experiment uses equations from circular motion and forces on electrons in magnetic fields, which form part of the A2 Physics syllabus, as well as being in the ‘Turning Points in Physics’ module. The experiment needs a fully darkened space. A teacher must be present at all times during this experiment due to high voltages to the electron gun in the fine beam tube.