Newton's cradle, named after English 17th century scientist Isaac Newton, is a device that demonstrates conservation of momentum and energy using a series of swinging spheres. When one sphere at the end is lifted and released, it strikes the stationary spheres; a force is transmitted through the stationary spheres and pushes the last sphere upward. The device is also known as Newton's balls or Executive Ball Clicker. When you are boring or tired, please swing it, time goes by. When you are anxious, please swing it, you will be in peace. When you are suffering from insomnia, please swing it, you will fall asleep soon. When you want to have a break from study or work, please swing it, you will be relaxed. Size: 5.5x5.1x4.4 in Material: Solid wood+Stainless steel balls & structure Package: 1x Frame with 5 balls 1x Base Tips: Our base was made of plastic to avoid mold and insect.When you use this newton's cradle, please move it in a horizontal line, so the lines will not be tangled. Please don't worry, if it was tangled, you could untangle it still, just need some patience.DIY your own cradle!
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