Inertia Demonstration Kit Material_Bristle 5-inch compact and 6-inch long-format

5-inch compact and 6-inch long-format units

this concave glass mirror at 100mm focal length runs at f/1 for vivid real-image demos and converging-reflection work

Aluminum 40cm precision force table with tapped pulley positions and central ring assembly for resolving and composing force vectors under equilibrium conditions

Hard vulcanized ebonite rod that takes on a strong negative charge when rubbed with fur

and magnetic-property variations

Inertia Demonstration Kit Material_Bristle 5-inch compact and 6-inch long-formatDemonstrates Newton's first law by yanking a metal card from beneath a steel ball, leaving inertia to drop the ball straight into the waiting receptacle below.