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Code Number: 4C33.50
Demo Title: Franklin's Pulse Glass - Hand Boilers
Condition: Excellent
Principle: Vapor Pressures/Partial Pressures
Area of Study: Thermodynamics
Equipment:
Franklin's pulse glass, Stand for pulse glass, Hand Boilers.
Procedure:
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.
References:
- 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.
- "Pulse Glass", Pike's Illustrated Catalogue of Scientific & Medical Instruments, Pike's Illustrated Descriptive Catalogue of Optical, Mathematical, and Philosophical Instruments, 1984, p. 91.
- The Queen Catalogues Vol. II, Catalogue of Physical Instruments, No. 5033, p. 65.