Thomson identified the electron by measuring its response
to both electric and magnetic fields. Simlutaion
allows you to see how a cathode ray behaves in these
different fields. If you balance the forces on the beam
you can work out the specific charge of the electron.
the velocity the cathode rays by balancing the electric
and the magnetic field. When the deflection angle is
zero, the two fields are of equal strength, and the
cathode rays' velocity can be found. Use the sliders
to change the field strengths.
value did you find? You may be able to increase your
accuracy by increasing the field strengths and causing
a greater deflection.