Educational Tool:Own your own piece of scientific history and explore the significant values of physics. Recliner Cable Chair . Newton's Pendulum:Not only shows a pendulum, but also shows the principles of kinetic energy and conservation of momentum. Friction and damping effects are also observed. Decorative objects:Put this Newton's pendulum on the living room table and you'll think you're at psychrology. Science Toy:When you are tired of studying and working, you can mix balls to hear the clicking sound. You love to have fun smacking the marbles it relaxes you. Funny Object:Newton's Cradle is a timeless and classic desktop science "toy". Use to kill time, relieve stress, deaf ears to annoying co-workers, or schooling young physics.