One-Meter Four-Gap Wheatstone Bridge with Brass Strips Lab Equipment and Supplies_Plastic Labware Adjustable-vibrator induction coil producing a

Adjustable-vibrator induction coil producing a 30mm spark from a 6-12V DC input

and compass behavior

Low-noise 220V blower with a detachable 60-inch hose and adjustable flow control

and 3 rods for multi-configuration study

this Wimshurst generator builds a visible high-voltage spark

One-Meter Four-Gap Wheatstone Bridge with Brass Strips Lab Equipment and Supplies_Plastic Labware Adjustable-vibrator induction coil producing aPolished hardwood Wheatstone bridge with five terminal posts, brass strip gaps, a one meter constantan resistance wire graduated in millimeters, and a sprung jockey for null point sliding contact.