This demonstrates Charless law and energy transfer perfectly! This makes a great desk accessory as well.
Many facts printed on box that will assist in teaching how a hand boiler works and explain key scientific terms. Hand boiler is 7? tall and 2? wide at base, made of glass so keep out of reach of young children.
Used with permission, copyright 2019 Tedco Toys, Inc. Copyright 2019 Brey Corp. t/a Hobby Works