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| Best Seller  | �Perfect Educational Newton Ball】According to the law of conservation of momentum and energy the metal ball will not swing forever because of resistance. Usually under normal conditions the ball will swing for about 15-30 seconds. However due to... more | FREE shipping go to store |
 | Description This device demonstrates the conservation of momentum and energy through a series of pendulum balls. Pull back one or more balance balls and release them the same number of balls will swing up on the other side. It can well develop kids... more | $9.45 $8.41 go to store |
| Best Seller  | Description This item is made of plastic and metal material and practical for long time use. Not only as the physics experiment teaching equipment but also as a decorative ornament for home and office or as gifts for friends or someone who you loves.... more | go to store |
 | Features: Strong Line: Our newton cradle use a high-quality nylon line that is strong enough to not be broken easily. Black Wooden Base: The hard wooden base can keep the smooth operation of the newton s cradle balance balls. Swing Time: The balance... more | $11.95 $10.64 FREE shipping go to store |
 | Celestial Orbital Perpetual Motion Instrument Electromagnetism Physical Model (01) Description The frame of the swinger is made of plastic and magnet. Principle: The force is applied by the force of the hand and then the energy converted by the battery continues to swing until the battery is running out. Features - Color: As Shown. -... more | $15.99 $13.59 go to store |
 | zhuxiali Celestial Orbital Perpetual Motion Instrument Electromagnetism Physical Model (01) Description The frame of the swinger is made of plastic and magnet. Principle: The force is applied by the force of the hand and then the energy converted by the battery continues to swing until the battery is running out. Features - Color: As Shown. -... more | $14.99 $12.74 go to store |
 | Hims Celestial Orbital Perpetual Motion Instrument Electromagnetism Physical Model (01) Description The frame of the swinger is made of plastic and magnet. Principle: The force is applied by the force of the hand and then the energy converted by the battery continues to swing until the battery is running out. Features - Color: As Shown. -... more | go to store |
 | Celestial Orbital Perpetual Motion Instrument Electromagnetism Physical Model (01) Description The frame of the swinger is made of plastic and magnet. Principle: The force is applied by the force of the hand and then the energy converted by the battery continues to swing until the battery is running out. Features - Color: As Shown. -... more | $13.32 $11.85 go to store |
 | Description This newton pendulum balls ornament is made of metal and plastic material for and safe in use. It is simple design but practical in use bringing much convenience to you. This professional teaching equipment for physics teaching can train... more | $11.84 $10.42 go to store |
 | Description: Classic Executive Desk Toy - Revolving Balls Perpetual Ornament Powered by 4pcs AA batteries or USB move lightly it would keep going on rocking around until you stop it or power off ( Batteries are not included ) Kids educational physics... more | $15.85 $14.62 FREE shipping go to store |
 | Perpetual Motion Celestial Desk Decor: Give this celestial desk decor a gentle swing and watch it continue to sway endlessly. It features a creative Milky Way celestial bodies design that adds a touch of wonder to your surroundings. Easy Installation... more | $14.89 $12.05 FREE shipping go to store |
 | Product Description: Material:ABS Plastic Iron Size:24 x 23 x 14cm / 9.4 x 9 x 5.5 Quantity:1 Set Battery Type:4 x AA Batteries(Not Included) Features: This is a special perpetual motion toy because it has no switch just start and stop it with your... more | $18.88 $16.99 FREE shipping go to store |
 | Description Are you looking for a creative intelligence toy for your kids? This Newton s cradle model will be your best choice. This product is a DIY Newton s cradle model for students. It is excellent for learning energy balance and dynamics. It is a... more | go to store |
 | Battery Powered Newtons Cradle Dynamic Balancing Instrument Physics Science Fun Desk Ornament Educational Teaching Science Toys Christmas Present for Children Product Description: Material:ABS Plastic Iron Size:24 x 23 x 14cm / 9.4 x 9 x 5.5 Quantity:1... more | FREE shipping go to store |
 | 1�STRESS RELIEF: Desk balancing toy can relieve stress but also educate children s physics placed on a stable table will swing happily. 2�CLASSIC ARTISTRY: Art balance toy is a classic art creation. This cool desktop toy will be a great ice breaker... more | $18.28 $16.27 FREE shipping go to store |
 | Features: 1. ATTRACTIVE APPEARANCE: Perpetual motion toy is finely crafted and looks great perfect for innovative decoration. 2. EASY TO INSTALL: Perpetual swing toy is easy to use install it and then shake it with your finger and it will start working... more | $20.99 $17.19 FREE shipping go to store |
 | Newtons Cradle Pendulum Balance Balls Cool Science Gadgets Perpetual Kinetic Motion Physics Toys Desktop Decoration for Office& Home more | go to store |
 | Description Newtons Cradle Balance Balls Portable Desktop Pendulum 5 Swinging Balls Toy Perpetual Motion Desk Decorations Science Physics Gadget for Home Office Games Features - Material: ABS - Size: About 9x7.5x9.5 cm - Color: As shown Package... more | go to store |
 | Specifications: This desktop display model is a version of Newton s cradle. A device that demonstrates conservation of momentum and energy via a series of identically sized swinging spheres. Ideal for school educational prop as well as gift for kids.... more | FREE shipping go to store |
 | Kotyreds Rotation Perpetual Motion Swing Wooden Toy Newton Pendulum Production Kit Specifications: Material: wooden Finished product size: 150 * 112 * 85mm/5.91*4.41*3.35 Function: Exercise children s hands-on ability understand the principles of energy transfer energy conservation etc. Note: What you will receive is a kit of... more | FREE shipping go to store |
 | Kinetic Art Asteroid Rotation Perpetual Motion Swing Celestial Globe Newton Pendulum Model Office Desktop Decompression Decor more | FREE shipping go to store |
 | 100% brand new and high quality Features: It is made of metal and plastic. Perfect decoration for space themed parties. Three-dimensional sense and realism. Perpetual motion desk ornament. You don t need batteries. A good helper to reduce stress when... more | FREE shipping go to store |
 | 1�3D Orbit: The rotating orbiter is like a 3D ball moving smoothly and swaying from side to side a beautiful scenery on the desk. You can also learn the charm of science in this model. 2�Funny Design: Rotating orbiter has a revolving and innovative... more | $17.29 $15.39 FREE shipping go to store |
 | 1�3D Orbit: The rotating orbiter is like a 3D ball moving smoothly and swaying from side to side a beautiful scenery on the desk. You can also learn the charm of science in this model. 2�Funny Design: Rotating orbiter has a revolving and innovative... more | $13.93 $9.81 go to store |
 | 1�3D Orbit: The rotating orbiter is like a 3D ball moving smoothly and swaying from side to side a beautiful scenery on the desk. You can also learn the charm of science in this model. 2�Funny Design: Rotating orbiter has a revolving and innovative... more | go to store |
 | 1�3D Orbit: The rotating orbiter is like a 3D ball moving smoothly and swaying from side to side a beautiful scenery on the desk. You can also learn the charm of science in this model. 2�Funny Design: Rotating orbiter has a revolving and innovative... more | $13.03 $11.46 FREE shipping go to store |
 | 1�3D Orbit: The rotating orbiter is like a 3D ball moving smoothly and swaying from side to side a beautiful scenery on the desk. You can also learn the charm of science in this model. 2�Funny Design: Rotating orbiter has a revolving and innovative... more | FREE shipping go to store |
 | Item Type: Electronic Perpetual Motion Toy Material: Plastic Size after combination: Approx. 25 x 23 x 11cm / 9.8 x 9.1 x 4.3in Battery type: AA batteries Battery type: 4pcs AA 1.5v (shipped without batteries) 1�3D Orbit: The rotating orbiter is like... more | FREE shipping go to store |
 | Item Type: Electronic Perpetual Motion Toy Material: Plastic Size after combination: Approx. 25 x 23 x 11cm / 9.8 x 9.1 x 4.3in Battery type: AA batteries Battery type: 4pcs AA 1.5v (shipped without batteries) 1�3D Orbit: The rotating orbiter is like... more | go to store |
 | 1�3D Orbit: The rotating orbiter is like a 3D ball moving smoothly and swaying from side to side a beautiful scenery on the desk. You can also learn the charm of science in this model. 2�Funny Design: Rotating orbiter has a revolving and innovative... more | $16.34 $13.58 FREE shipping go to store |
 | 1�3D Orbit: The rotating orbiter is like a 3D ball moving smoothly and swaying from side to side a beautiful scenery on the desk. You can also learn the charm of science in this model. 2�Funny Design: Rotating orbiter has a revolving and innovative... more | $13.94 $11.54 go to store |
 | 1�3D Orbit: The rotating orbiter is like a 3D ball moving smoothly and swaying from side to side a beautiful scenery on the desk. You can also learn the charm of science in this model. 2�Funny Design: Rotating orbiter has a revolving and innovative... more | $16.60 $13.58 FREE shipping go to store |
 | 1�3D Orbit: The rotating orbiter is like a 3D ball moving smoothly and swaying from side to side a beautiful scenery on the desk. You can also learn the charm of science in this model. 2�Funny Design: Rotating orbiter has a revolving and innovative... more | FREE shipping go to store |
 | Item Type: Electronic Perpetual Motion Toy Material: Plastic Size after combination: Approx. 25 x 23 x 11cm / 9.8 x 9.1 x 4.3in Battery type: AA batteries Battery type: 4pcs AA 1.5v (shipped without batteries) 1�3D Orbit: The rotating orbiter is like... more | go to store |
 | 4pcs Perpetual Motion Toy Swing Adornment Chic Cupid Perpetual Motion Toy for Office Table Description The perpetual motion toy can be used as a desktop adornment. Made of premium materials durable for long time using can be used for room creative decoration. With cupid swinging design inside wonderful as home decoration collection also a... more | go to store |
 | Perpetual Motion Toy Swing Adornment Chic Cupid Perpetual Motion Toy for Office Table Description The perpetual motion toy can be used as a desktop adornment. Made of premium materials durable for long time using can be used for room creative decoration. With cupid swinging design inside wonderful as home decoration collection also a... more | $9.99 $8.89 go to store |
 | Perpetual Motion Toy Swing Adornment Chic Cupid Perpetual Motion Toy for Office Table desk toys perpetual motion toy perpetual motion perpetual motion machine desk perpetual motion machine perpetual motion device perpetual motion desk toy desk gadgets decompression toy table ornament more | $9.57 $8.52 go to store |
 | Perpetual Motion Toy Swing Adornment Chic Cupid Perpetual Motion Toy for Office Table desk toys perpetual motion toy perpetual motion perpetual motion machine desk perpetual motion machine perpetual motion device perpetual motion desk toy desk gadgets decompression toy table ornament more | go to store |
 | Perpetual Motion Toy Swing Adornment Chic Cupid Perpetual Motion Toy for Office Table Description The perpetual motion toy can be used as a desktop adornment. Made of premium materials durable for long time using can be used for room creative decoration. With cupid swinging design inside wonderful as home decoration collection also a... more | $12.74 $11.34 go to store |
 | Description The perpetual motion toy can be used as a desktop adornment. Made of premium materials durable for long time using can be used for room creative decoration. With cupid swinging design inside wonderful as home decoration collection also a... more | go to store |
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