Science Kits

Jofuni Professional Low Noise Rock Tumbler

Jofuni Professional Low Noise Rock Tumbler Machine, Rock Polishing Machine Kit with Noise Reduction Cover for Kids, Adults & Rock Collector, 3-Speed Motor & 9-Day Timer, Geology Hobby Toy Gif 【Dual Mute Design】Our rock tumbler kit replaces the plastic drum with a rubber drum, reducing noise generation at its source. Coupled with our exclusive soundproof housing effectively minimizes noise transmission. It operates 75% quieter than other models. As the Rock Tumbler needs to run constantly, the lower noise level reduces the disruption to your life.(Makes less noise if used on foam pads) 【User-friendly】Our rock tumbler machine is equipped with 3-level...

Stirling Engine Kit - Mini Hot Air Stirling Engine Motor Model with LED Light

Stirling Engine Kit – Mini Hot Air Stirling Engine

Stirling Engine Kit – Mini Hot Air Stirling Engine Motor Model with LED Light, Steam Engine Building Kit for Adults & Students, Educational Science Experiment Toy, Electricity Generator for Ages 18+ INNOVATIVE BALANCED DESIGN: Features a unique balance-style structure for smooth operation; powered by high-grade alcohol to generate electricity and illuminate the included LED HIGH-QUALITY METAL CONSTRUCTION: Made from durable zinc alloy with an electroplated finish for a sleek, industrial aesthetic; precision engineering ensures long-lasting performance EDUCATIONAL & STEM LEARNING TOOL: Perfect for demonstrating external combustion principles in classrooms, science fairs, and engineering projects; enhances understanding of physics and mechanics...