Al Tobias (wat4y) - Office: Gibson S123 & Physics 218, (434) 924-0538
Demonstrations are cataloged according to PIRA Bibliography
PLEASE REQUEST DEMOS WELL IN ADVANCE
Due to Physics Building renovations, the lead time to set up demo requests has increased due to the need to transport equipment across campus. Please be kind and let me know well ahead of time what you need.
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Purpose:To show that an electric current can be carried by an electrolytic solution, and that the result is a chemical charge.
Procedure:Fill the cell about 2/3 with cupric sulfate and insert the electrodes. Complete battery circuit connecting the copper electrode to the positive terminal of the battery. When current flows, copper is dissolved from the positive electrode and plated on the negative electrode. Reversing the current flow will clean the plated copper off the nickel and plate it back on to the copper electrode. Note that current could be (and once was) defined in terms of the rate of plating a substance out of solution.