20mm Brass Density Cube with Hook Racks & Stands_Flask Stands Graduated white screen mounted for

Graduated white screen mounted for use on the optical bench

this motor-generator pairs a split-ring commutator against slip rings with bulb indicators

and commutator assemblies for direct observation of each component

sized to deliver 6V at the high-current capacity of D cells for sustained electromagnet and motor demonstrations

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

20mm Brass Density Cube with Hook Racks & Stands_Flask Stands Graduated white screen mounted forSuspends a 20mm solid brass cube from spring scales for Archimedes' principle and buoyancy measurement, with the (Br) element stamp marking the material for easy identification.