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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8
Material: Alloy
Packing: Graphic Carton
• Ideal toy and gift for all children above 10 years old
This Stirling engine model features a power generation design partnered with an LED light for a unique visual effect
NIKOLATOY® Creative Tesla Columbus Eggs - Fun Physics Experiments In stock Material: AlloyBrandNIKOLATOY Product NameNikolaToy Creative Tesla Columbus Eggs Size12*12*0cm 4. 7*4. 7*4inch Weight520g MaterialAcrylic + metal Processmoulding Principle explanation: After the motor is powered on, it rotates to drive the top two magnets to rotate equally. After the magnets reach a certain degree of rotation, a magnetic eddy current is formed, and the metal egg on top will rotate with the magnetic eddy current. The rotation principle is to rotate