A simple setup keeps electrodes partially immersed in water containing an electrolyte, allowing a small current to flow between the electrodes Students can then sample the resulting electric field using the included multimeter Contents: Plastic trough, 33 x 25 cm, with printed orientation grid and fitted with three electrode support posts Wire harness with snap connector and two alligator clips 2 straight metal strip electrodes, 10 cm long 2 short rod electrodes 2 electrode support arms Sample point arm Digital multimeter Activity guide