2B30.30 - Magdeburg Hemispheres

Code Number:
2B30.30
Demo Title:
Magdeburg Hemispheres
Condition:
Excellent
Principle:
Air Pressure
Area of Study:
Heat & Fluids
Equipment:
Magdeburg Hemispheres.
Procedure:

Some vacuum grease should be applied to the hemispheres to insure a good seal. Align the arrows that are scratched into the hemispheres to insure success of this demo.

References:
  • Armand Le Noxaïc, "A Spectacular Experiment Exhibiting Atmospheric Pressure", TPT, Vol. 52, #4, Apr. 2014, p. 223. 
  • Carl H. Hayn, "Archimedes and the Magdeburg Hemispheres", TPT, Vol. 13, #1, Jan. 1975, p. 42.
  • Ernest Hammond, "Demonstration of Atmospheric Pressure", TPT, Vol. 3, #6, Sept. 1965, p. 285. 
  • Thomas B. Greenslade Jr., "The Magdeburg Hemispheres", AJP, Vol. 81, #2, Feb. 2013, p. 87.
  • Guenter Schwarz, P. Vijendran, and A. K. Gupta, "Quantitative Study of Force due to Air Pressure", AJP, Vol. 36, #3, Mar. 1968, p. ix.
  • Back Scatter, "Magdeburg Hemispheres", Physics Today, Vol. 74, #12, Dec. 2021, p. 68.
  • D. Rae Carpenter Jr. and Richard B. Minnix, "F-015. Magdeburg Hemispheres", DICK and RAE Physics Demo Notebook, 1993.
  • D. Rae Carpenter Jr. and Richard B. Minnix, "F-020. Balloon With 2 Cups", DICK and RAE Physics Demo Notebook, 1993.
  • G. D. Freier and F. J. Anderson, "Fd-2. Mageburg Hemispheres", A Demonstration Handbook for Physics.
  • Julien Clinton Sprott, "2.1. Magdeburg Hemispheres", Physics Demonstrations, ISBN 0-299-21580-6, p. 66 - 67.
  • George M. Hopkins, "The Barometer", Experimental Science, p. 90.
  • John Henry Pepper, "Experiments with the Air-Pump", Cyclopadic Science Simplified, p. 448 - 449.
  • R. W. Pohl, "14. The Atmosphere: Experiments on Atmospheric Pressure", Physical Principles of Mechanics and Acoustics, p. 180 - 181.
  • Martin Gardner, "The Magdeburg Tumblers", Entertaining Science Experiments with Everyday Objects, p. 103.
  • Julius Sumner Miller, Q40 & A40, Millergrams I – Some Enchanting Questions for Enquiring Minds, p. 33 & 90.

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.