Stark Tesla's Egg of Columbus AC Motor Tesla Coil Motor Science Motor Model Toy Features: .Design Intention: Tesla's Egg of Columbus is one of the representative products of Nikola Tesla, the father of alternating current. The alternating current passes through the circuit and generates a rotating magnetic field, which makes the metal object in the center rotate. It is very magical. On the basis, this product uses a capacitive time-sharing circuit, which reduces the size, and uses a transparent structure, which can intuitively and clearly see the internal structure and principle. .Technical Points: Customized silicon steel core, 3D printed winding skeleton, transparent acrylic structure, fine winding group, 35mm solid copper ball. .Usage: Plug the power cord into the product and turn it by turning the switch. It is not recommended to use it for more than 5 minutes each time. The coil will heat up. It is best to stop it for a period of time and then turn it on again. .Note: The product can not be changed the power supply voltage and power without permission; it is strictly forbidden to connect the wires privately; acrylic is easy to deform, crack, wear, and will be shipped with a film, please do not drop it or put it in a high temperature environment; Rotate the motor to avoid danger. .Significance and Value: Columbus eggs can be used as educational toys, technological ornaments, experimental teaching displays, etc.; used to display and explain the principles of rotating magnetic field models and asynchronous motors. Strengthen scientific quality training. .For Age: 8+ Specifications: .Color: As Shown .Material: Metal + Acrylic .Voltage: 220 Turn 15V AC .Current: 2A .Power: 15W .Product Dimensions: 13 x 13 x 12.5cm .Product Weight: 1687g .Package Dimensions: 18 x 16 x 15cm .Package Weight: 1800g .Packing: Box Package Content: .1 x Motor Model