Extensive collection of experiments illustrating fundamental principles of physics. Demonstrations on this disc: Resonance - bowling ball pendulum resonance, resonant driven pendula, driven spring and weight, pump pendulu, reed tachometer, glass breaking with sound, coupled pendula, Wilberforce pendulum; Mechanical Waves - wave on rope, pulse on moving chain, tension speed of wave speed, torsional waves, wave speed, longitudinal wave model, longitudinal Slinky waves, wave superposition, reflection of waves, spring wave reflection, wave coupling, refracti on of water waves, single slit diffraction of water waves, doulbe slit interference of water waves, moire pattern; Standing waves - longitudinal standing waves, Slinky standing waves, standing waves, three tensions standing waves, rubber tube standing waves, drumhead, Chladni plates. Kit contains: DVD with English and Spanish audio tracks and subtitles, and bilingual study guide.