Discover the physical characteristics of the surrounding world. Includes 153 experiments and theoretic explanations of: measuring units, mechanics, fluids, gases, rotation and oscillation. Contains 35 different components. Easy to perform and educational. Make: hourglass, water clock, force meter, lever, simple scales, manometer, diving bell, Tantalus's jug without bottom; check kinetic energy, pressure in liquids at rest, characteristics of free fall, measure the speed of air and more. Includes clear and informative manual with illustrated experiments. No batteries required.