US$ 149.99
used to trace field lines around bar magnets and current-carrying wires
Plano-cylindrical lens at 50 by 50mm with 17 diopter optical power and ground polished edges
5V replacement element so wet-cell demonstrations stay running once the original electrolyte loses charge capacity
letting students compare force ratios across four different radii in a single assembly
this electromagnet-driven pivoted-arm sounder on a wooden base produces the snap of early telegraph operation when current pulses the coil
Multiple Connection Receiver Adapter, 19/26 Socket and 19/26 Cone, Borosilicate Glass Material_Glass used to trace field linesMultiple connection receiver adapter in borosilicate glass features 19 26 socket for connecting multiple apparatus components in chemistry setups.