BOJIN Fan-shaped Asteroid Kinetic Desk Toy - Electronic Perpetual Motion
- Product Dimensions: 6.1 x 4.1 x 7.7 inches
- Item Weight: 12.3 ounces
- Shipping Weight: 11.2 ounces
- Item model number: BOJ001813
- Manufacturer recommended age: 6 years and up
- HIGH QUALITY -- Manufactured by BOJIN, stylish and innovative design, PERFECT gift for Christmas, cool office desk toys
- GREAT GIFT IDEA -- An exquisite gadget gets everyone's affection and makes a lively home decoration or executive gift
- VERSATILE -- 1. A fun toy that can be placed in house, school or office 2. Educational purpose 28. Psychological purpose
- MEANINGFUL -- Excellent educational & science gadget, own your very own piece of scientific history and explore significant values of physics
- AFTER-SALE WARRANTY -- If, for any reason, you are not completely satisfied, please contact us by email so that we may address your concerns
Color:Helm - Great gift idea, decoration, and a cool collection for thescience physics enthusiast.- A simple spin of the top of the base sets thegalaxy in motion. - Requires 2 AA batteries - not included. - Simple toassemble components, Silver rings continuously spin around a central sphere.This kinetic sculpture has several brightly colored metallic balls rotatinglike a Ferris wheel.A Brief HistoryPerpetual motion continues indefinitelywithout any external source of energy. This is impossible to ever achieve ThePerpetual Motion Machine, a hypothetical machine, that can work indefinitelywithout an energy source because of friction and other sources of energy loss,and the violation of the first or second law of thermodynamics.The idea ofperpetual motion machine originated in India, around 1200 AD and the ideaspread from India to the Islamic world, then spread to the west. During theRenaissance, Leonardo da Vinci (1452-1519) made a similar device, he thinksthat the right heavy ball is farther than the left side ball for the distancesfrom the center of the gravity, under the action of unbalanced, the wheelswill rotation along the direction of arrow, but the results is negative. Inthe middle of the 19th century, a series of scientific workers to madetremendous contributions to recognize the function of heat transformation andtransformation relationship of other forms of material movement, the great lawof conservation and transformation of energy was found after it, and the lawof conservation of energy is established. As the understanding of perpetualmotion, some countries limit the invention of perpetual motion.About us:Pioneering developments for several years, BOJIN have been focusing on theexquisite technologies and physics tools.
Most items are shipped within one business day via UPS within the Continental United States.
- Canada shipment can take up to 10 days
- Alaska, Hawaii, and Puerto Rico shipment can take up to 10 days, and some items may not be permitted to ship to these locations.
- If any shipment is not permitted to your area, full refund will be issued within two business days.
All returns accepted within 30 days after receiving the item.
- Refund given as money back (no exchanges)
- Return Shipping to be paid by buyer, unless item defective or damaged.
- 15% Restocking fee applies unless return due to defective or damaged product.
- Perishable or Hazardous Goods are not returnable. Returns may require compliance with Manufacturer policies.
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