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Place a small round glass ball with a diameter slightly smaller than the distance between two nails at the entrance. As the ball descends, it rolls down to the left or right with a probability of 1/2 after hitting the nails, and then touches the next layer of nails. Continue like this until you roll into a grid on the bottom plate. Continuously dropping numerous small balls of the same size from the entrance, as long as the number of balls is quite large, they will be stacked on the bottom plate to form an approximately normal density function graph (i.e., a symmetrical ancient bell shape with a high middle and low ends), where n is the number of layers of nails. This is a model designed by British biostatistician Galton to study random phenomena
Please refer to the product specifications for detailed material information.
The kit includes all necessary parts for assembly. Please see the product description for the exact part count.
Assembly time varies based on experience, but most builders complete the model within a few hours.
The difficulty level is moderate, suitable for both beginners and experienced builders. Clear instructions are included to guide you through each step.
This product is recommended for ages 14 and up due to small parts and assembly complexity.
Yes, each kit comes with a complete set of assembly tools and a detailed illustrated instruction manual. The step-by-step guide walks you through each stage of construction.
This is primarily a display model designed to be a striking decorative piece. Once assembled, it makes an excellent addition to desks, shelves, or display cabinets. Some models include LED lighting for enhanced visual appeal.
We offer worldwide shipping. Orders are typically processed within 1-2 business days. Standard shipping takes 7-15 business days depending on your location. Express shipping options are available at checkout.
We offer a 30-day return policy. If you are not satisfied with your purchase, you can return the product in its original condition for a full refund. Please contact our customer support to initiate a return.
Yes, gift wrapping is available at checkout for an additional fee. This makes a perfect gift for hobbyists, engineers, and model enthusiasts.
