Force Oscillation and Resonance Demonstration Kit Subcategory_Kinematics producing audible beats when sounded

producing audible beats when sounded against its fixed-frequency partner on the matching wooden resonance base

Heavy-duty die-cast alloy boss head with a painted gray finish and two adjustable thumbscrews

Pivoted needle-style electroscope that swings on its axis when a charge is applied

Sequential mitosis stages — prophase

Hand-cranked to convert mechanical work into electrostatic energy

Force Oscillation and Resonance Demonstration Kit Subcategory_Kinematics producing audible beats when soundedSpeed controlled 6V motor driving two cams pumps four spring mass systems at any chosen frequency, letting students sweep through resonance and watch amplitude peak when drive matches natural pitch.