Spin the Rattleback clockwise and watch it stop, rattle up and down and then spin in the other direction! A science curiosity whose ancient and mys...
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Precision gyroscope made in the USA! Includes a string and an 'RPM Cord' for getting the gyroscope spinning. Follow the instructions to perform ama...
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Classic cast metal gyroscope. Gyroscopic forces have amazed mankind for hundreds of year. Now these amazing forces are yours. You can perform feats...
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Learn about refraction and reflection, kaleidoscopic effects, light and color! Prismatic effects have fascinated mankind since the beginning of tim...
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