Precision Aluminum Force Table, 40cm Diameter Capacity_25mL Hand-driven Newton's color disc that

Hand-driven Newton's color disc that spins seven painted segments fast enough to merge into apparent white through persistence-of-vision and additive color mixing

Square die-cast alloy boss head with metal thumbscrews

Packaged as a biodegradable classroom kit

relating photon frequency to the kinetic energy of emitted electrons for quantum physics investigations

fanning apart visibly when a charged rod approaches to demonstrate electrostatic repulsion and induction

Precision Aluminum Force Table, 40cm Diameter Capacity_25mL Hand-driven Newton's color disc thatAluminum 40cm precision force table with tapped pulley positions and central ring assembly for resolving and composing force vectors under equilibrium conditions.