DOTSOG Oversized Newtons Cradle, Desk Table Decor Metal Pendulum Ball Newton Ball Physics Science Pendulum Steel Balance Bal l for Office Physics Teacher Toys- with Mirror

Principle: Not only demonstrates a pendulum, but also shows the Laws of Conservation of Momentum and Energy. Attention: Friction and damping effects are inevitable This classic desktop toy provides you many benefits and entertainments, is suitable for various locations such as house or office, and is an intriguing device that not only demonstrates pendulum motion, but also helps to show the laws of Conservation of Momentum and Energy. Whether you are studying physics knowledge or looking for a delicate gift, this balance ball is definitely what you really want. Specifications: Size: 7.1×4.7×7.1 inch Material: Solid Glass base +Stainless steel balls & structure Occasions: Daily use, Education supplies, Psychotherapy, Birthday present, Business gift Package: 1x Frame with 5 balls 1x Glass base Warm Prompt: When you use this newtons cradle, please move it in a horizontal line, so the lines will not be tangled. Please dont worry, if it was tangled, you could untangle it still, just need some patience.DIY your own cradle!