Extensive collection of experiments illustrating fundamental principles of physics. Demonstrations on this disc: Kinetic Theory - pressure vs. volume, pressure vs. temperature, temperature increase simulation, pressure vs. volume simulation, equipartition of energy simulation, mercury kinetic theory, Brownian motion, Brownian motion simulation, diffusion, diffusion simulation bromine diffusion, Gaussian curve, free expansion simulation; Crystals and Low Temperatures - superconductors, crystal models, faults in crystal; Thermoelectricity - thermistor, thermoelectric magnet, thermoelectric heat pump, thermocouple; Electric Charges - electrostatic rods, electrostatic rod and cloth, electrostatic ping pong deflection, electrostatic ping-pong balls, conductors and insulators, piezoelectric sparker. Kit contains: DVD with English and Spanish audio tracks and subtitles , and bilingual study guide.