US$ 185.00
Bobbin-wound transformer coil with 4mm panel sockets
0220 26 24/25 0
an Erlenmeyer flask
Polished 8cm brass sphere on an ebonite-insulated metal base
low-consumption fan motor
Hollow Cylinder Electrostatics Demonstration Apparatus engine models Bobbin-wound transformer coil with 4mmPith balls suspended both inside and outside a charged metal cylinder make visible proof that electrostatic charge resides only on the outer surface of a conductor.
US$ 185.00
US$ 38.00