4-Step Differential Metal Pulley, 20/30/40/60mm Type_Tall Form configured to contrast eddy-current damping

configured to contrast eddy-current damping in continuous versus interrupted conductors

this metal helix lets stairwell-scale wave-propagation experiments amplify the visibility of standing waves

sized for high-turn-count windings where each turn adds little diameter to the coil core

and reactive-metal electrolysis behavior

sized to map charge distribution across larger conductors and transfer charge cleanly to an electroscope

4-Step Differential Metal Pulley, 20/30/40/60mm Type_Tall Form configured to contrast eddy-current dampingFour step differential pulley with 20, 30, 40, and 60mm sheaves on a 4 inch mounting rod, letting students compare force ratios across four different radii in a single assembly.