3" ABS Pulley with 50mm Ball Bearing and Thumbscrew Capacity_150mL generating enough output when cranked

generating enough output when cranked to light a connected bulb during electromagnetic-induction and energy-conversion demonstrations

Mid-length 750mm black insulated 2mm-plug lead with a crocodile clip on the opposite end

sized for general-purpose coil winding and electromagnet construction at the workhorse gauge of the line

dropping freely through the ring when cool but stopped by the ring once flame heating expands the ball

Compact-format sonometer designed to study the physics of vibrating strings on a footprint smaller than the standard 1-meter teaching unit

3" ABS Pulley with 50mm Ball Bearing and Thumbscrew Capacity_150mL generating enough output when crankedABS plastic pulley with a 50mm ball bearing wheel, a thumbscrew clamp for rod attachment, and an 18mm attachment diameter for pulling small weights in mechanical advantage experiments.