{"catalog_name":"World Products","variant":"c","item":{"handle":"wp-dcd-10001270668","title":"Heat-Cycle Engine Model with Glass Burner for Physics Students","category":"Toy","category_name":null,"category_gid":null,"product_type":"Toy","vendor":"World Products","price":"$21.94","currency_code":"USD","availability":"in_stock","inventory_quantity":0,"sku":"dcd-30003612004","barcode":null,"variant_title":"Stirling Engine","selected_options":{"Style":"Stirling Engine"},"description":"This heat-cycle engine model is built as school equipment for physics experiments and classroom learning, presenting the principles of heat-driven motion in a clear mechanical form. As a desktop mechanical demonstration, the finned engine body, flywheel, connecting rod assembly, and burner work together to create visible movement from heat. The metal heat-cycle engine features a rectangular base, a silver-toned finish, and a compact layout with the main parts arranged for easy viewing during demonstrations. A glass propellant burner or lamp on a round holder provides the heating source, making the demonstration model suitable for observing the engine's operational process step by step. 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