Economy Graphite Crystal Model Set Item Type_Dissection Pins 5-ohm reference coil non-inductively wound

5-ohm reference coil non-inductively wound from constantan on a 43mm ABS-supported bobbin with three 4mm sockets

Built for vacuum filtration

Carbon plate with 4mm socket terminals for the simple-cell apparatus

and similar simple molecules to teach VSEPR theory and 3D molecular geometry

producing the nearly uniform field used to calibrate magnetic sensors and verify the Helmholtz geometry

Economy Graphite Crystal Model Set Item Type_Dissection Pins 5-ohm reference coil non-inductively woundEconomy format graphite crystal model showing the layered hexagonal structure and the weak interlayer bonds responsible for graphite's slippery, lubricating properties.