Inertia Demonstration Kit Material_Bristle Twelve-position rotary capacitance substitution box

Twelve-position rotary capacitance substitution box selecting one capacitor at a time

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 HVAC work

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

Inertia Demonstration Kit Material_Bristle Twelve-position rotary capacitance substitution boxDemonstrates 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.