4C33.50 - Franklin's Pulse Glass - Hand Boilers
The pulse glass may be taken off the stand and by holding one of the bulbs in your hand the liquid can be made to boil into the other bulb. The hand boiler is just a hybridized version of the Franklin Pulse Glass.
Place the hand boilers in your hand. As you encircle the bottom part of the hand boiler with your hand you heat up the liquid in that part and force it to go to the top bulb. NOTE: the hand boilers are extremely fragile and will break easily if squeezed to hard or allowed to tip over on the table. The liquid may also cause staining of some fabrics.
- James Lincoln, "The Hand Boiler and How It Does Not Work", TPT, Vol. 60, #3, March 2022, p. 232.
- Hj- 7: Freier and Anderson, A Demonstration Handbook for Physics.
- H- 72: Richard Manliffe Sutton, Demonstration Experiments in Physics.
- George M. Hopkins, "Cryophorus", Experimental Science, p. 188.
- George M. Hopkins, "Air Thermometer", Experimental Science, p. 184.
- Jodi and Roy McCullough, "Thermodynamics with a Hand Boiler", The Role of Toys in Teaching Physics, p. 4.130.
Disclaimer: These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist. The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose. The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources. Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks. These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage. Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.