United Scientific Low Temperature Differential Stirling Engine with 3.5 inch diameter runs by exploiting the heat flow generated by the small temperature difference between room temperature and a container of hot water or ice. With a cup of hot water, observe the speeds of up to 150 RPM. By using ice, reverse the direction of 5.63 in attractive stainless stirling engine. Dimensions: 7 x 5 x 5 inches. Shipping weight: 1.25 lb. Includes activity guide. Shipping Details Shipping Type: parcel Free Shipping: true Specifications Maximum Age: 12 years Maximum Grade Level: Grade 12 Allergens: Contains No Allergens Certifications: Not Applicable Grade Level: Middle-High School Specialty Shops: Clearance SUOM Description: Each Brand Name: United Scientific Description: Model Stirling Engine California Proposition 65 Warning: WARNING: iWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov. For more information go to www.P65Warnings.ca.gov.
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