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Medium size: 14*14*12CM (500g) Ball diameter: 1.8CM

Large Size: 18*18*12CM (850 grams) Ball Diameter: 2.2CM

A large-sized board is also 0.2CM thicker than a medium-sized board.

Material: Solid Wood + Fishline + Carbon Steel Balls + Metal Supports

The support is made of metal, and the base is made of solid wood, with a super strong texture.

Z-shaped solid wood Newton's cradle ball collision ball collision ball home office gift decoration ornaments crafts gift

A Newton's cradle is a desk demonstration device invented in the 1960s, with five balls of the same mass fixed by ropes and tightly arranged. It is also known as Newton's cradle balls, momentum conservation cradle balls, perpetual motion balls, physical collision balls, bumping balls, etc. Newton's cradle was first proposed by French physicist Edme Mariotte in 1676. When the ball on the far right is swung and collides with the other four tightly arranged balls on the return swing, the ball on the left will be ejected, and only the ball on the left will be ejected. Of course, this process is reversible. When the ball on the left is swung and hits other balls, the ball on the right will be ejected. When the two balls on the right are swung and collide with other balls at the same time, the two balls on the left will be ejected. Similarly, the opposite direction is also feasible, and it can be applied to more balls, three, four, five, etc.The principle of the five balls' change: the ball on the left receives momentum and passes it to the ball on the right, which is suspended side by side. The momentum is then passed from one to the next until it reaches the rightmost ball, which cannot pass it on and is ejected. This is a series of elastic collisions, which also include inelastic collisions and momentum. Since there are no other forces at play during the collision, the leftmost ball with a momentum of l(m)vl must pass its momentum to the rightmost ball, which is initially at rest. The ball on the right with a momentum of r(m)vr, after the collision, has the same momentum. All the balls that are collided have a velocity of vr to the right and a tendency to move to the right, which is known as momentum conservation. The energy before and after the collision must be consistent, and the vibration motion of the balls is ignored.

Newton's Cradle is a classic table ornament toy in Europe and the United States, and it is also a very beautiful scientific toy. It can reflect the physical laws discovered by the great physicist Isaac Newton, including the conservation of kinetic energy. Just pull the outer steel bead, then let go, and the steel bead on the opposite side will bounce up, then bounce back and forth dozens of times until the power disappears, so the higher you pull the steel bead, the greater the force, the more times it can bounce, the lower you pull the steel bead, the smaller the force, and the fewer times it will bounce. It is very interesting. This intelligent and artistic craft is absolutely the best choice for you to put on your desk. When you are bored, play a few times to let your mind empty, which will make you work more powerful.

A demonstration model of Newton's law of inertia that was learned in middle school physics class. I miss the time in middle school; it can be kept as a souvenir or given to friends, or placed on the office desk or coffee table at home for decoration. Five balls are hung side by side, touching each other, and their centers are on the same line. First, pull the leftmost ball 15 degrees away from the center line.20MM, then let go of it, and when the ball next to it on the right collides, it stops, but the ball on the right swings up, and the distance it swings is roughly the same as the distance the left ball moves apart. If you pull both of the left balls at the same time, then after the collision, both balls stop, and two more balls on the right start swinging. When the right ball swings back and collides with the left ball, it transfers momentum to the left ball. This is the law of momentum conservation, but because of Newton's law of inertia, this kind of mutual collision will eventually stop due to the mutual cancellation of forces, so don't imagine it will keep swinging forever! When you lift a ball from the side to a maximum diameter point horizontally with respect to the other four balls and then let go (lifting two or three balls to see different effects, endless fun, and it depends on your imagination!), you will find that only one ball will swing back and forth; if it's two balls, both balls will naturally swing without the need for electricity to ensure even distribution of force, which is a small craft for passing the time when you are bored. In addition, it derives another function: when you can't fall asleep, do you feel pain? When you count sheep one by one, do you feel that you are too naive? Then please try this, lean on the table, and move your eyes with the collision of the iron ball, and you will fall asleep safely in no time!!! Don't forget the feedback it brings while playing, that is, it is educational. The law of momentum conservation defines: if a system is not subject to external forces or the sum of the forces is zero, then the total momentum of the system remains constant. Here, I also remind you that because this model is based on the law of momentum conservation, the balls will slowly stop swinging due to air resistance during the process of mutual collision, so please don't believe what is said in the market that they can swing forever, that is not realistic! If you want to achieve eternal inertial swinging, it is possible only in certain environments!!

Wholesale instructions:

1. The total amount must be at least 200 yuan to qualify for mixed batching!

2. A product with multiple styles, shipped with an average distribution.

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This sales center is located in Yiwu, Zhejiang, with convenient transportation.

 After-sales service:

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 2. Subjective dissatisfaction or imagined reasons for returns and exchanges of goods without actual quality issues will not be accepted.