Mini Newton's Cradle Balance Ball Classical Physics Science Fun Desk Kid's Desk Toy Educational ToolOwn your own piece of scientific history and explore the significant values of physics. Cable Recliner Chair .Newton's PendulumNot only shows a pendulum, but also shows the principles of kinetic energy and conservation of momentum. Friction and damping effects are also observed.Decorative itemsPut this Newton's pendulum on the living room table and you will think you are at psychrology.Scientific toyWhen you are tired of studying and working, you can shuffle balls to hear the rattling sound. You love to have fun smacking the marbles it relaxes you.Funny ObjectNewton's Cradle is a timeless and classic desktop science "toy". Use to waste time, relieve stress, deaf ears of annoying colleagues, or schooling young people in physics.Specific:Material: metalsColor: sliverSize: 18 x 11cm / 7.09 x 4.33inch (Approx.)Package Included:1 Set of Motion ToyNote:1. Please allow 1-2cm error due to manual measurement and make sure you do not mind before ordering.2. Please understand that colors may exist chromatic aberration such as different positioning of pictures. Note: The data are all manual measurement, please allow 1-3cm error, in Due to the light and display difference, there will be some color difference, depending on the physical item received.