Spectra tank

This tank allows to highlight the distribution of the electric field between 2 electrodes.
By connecting the electrodes to a Wimshurst or Van De Graaf machine, the grains of semolina previously arranged in the cup filled with paraffin oil for example, will naturally orient themselves according to the shape of the electrodes.

1 transparent support. 1 transparent tank. 2 point electrodes. 2 flat electrodes. 2 circular electrodes.