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Code Number: 2B40.40
Demo Title: Buoyancy Demo - Baroscope
Condition: Excellent
Principle: Pressure & Buoyancy vs. Surface Area
Area of Study: Fluids
Equipment:
Bell jar with Stand, Vacuum Pump, Balance with Solid & Hollow Spheres - (Baroscope).
Procedure:
Vacuum grease should be applied to the bell jar for a good seal. Be sure that the apparatus inside the bell jar does not obstruct the air hole in the vacuum stand.
References:
- Paul Hewitt, "Figuring Physics", TPT, Vol. 52, #9, Dec. 2014, p. 564.
- G. Calzà, L.M. Gratton, T. López-Arias, and S. Oss, "Measuring Air Density in the Introductory Lab", TPT, Vol. 48, # 3, March 2010, p. 189.
- Thomas B. Greenslade, Jr., "The Buoyancy Balance", TPT, Vol. 31, # 3, Mar. 1993, p. 160.
- "Figuring Physics", TPT, Vol. 28, # 4, Apr. 1990, p. 248.
- Zhu E-Qing, "A Demonstration to Show the Upthrust Exerted by Air", TPT, Vol. 26, # 6, p. 401, September 1988.
- Thomas B. Greenslade, Jr., "Buoyancy Balance", AJP, Vol. 93, # 2, p. 192, July 2025.
- Thomas B. Greenslade, Jr., "Buoyancy Balance", AJP, Vol. 78, # 7, p. 777, July 2010.
- W. Zimmermann Jr., "Buoyancy of Air", AJP, Vol. 48, #4, April 1980, p. 319.
- Fg- 3: Freier and Anderson, A Demonstration Handbook for Physics.
- R. W. Pohl, "16. Upward Thrust or Buoyancy in Gases", Physical Principles of Mechanics and Acoustics, p. 186.
- "95, Iron vs. Plastic", Christopher P. Jargodzki and Franklin Potter, Mad About Physics, p. 33, 180.
- Brown, Science for You-112 Illustrated Experiments.
- Janice VanCleave, "Heavy Air", Physics for Every Kid, p. 90- 91.
- Janice VanCleave, "Tilt", 200 Gooey, Slippery, Slimy, Weird, & Fun Experiments, p. 93.
- Janice VanCleave, "Tip", 201 Awesome, Magical, Bizzare, & Incredible Experiments, p. 77.
- Richard Berg, "A Pop Bottle Buoyancy of Air Demonstration", PIRA Newsletter, Feb. 1994.
- Joseph Frick, "#18 - The Balance Manometer", Physical Technics: Or, Practical Instructions for Making Experiments in Physics and the Construction of Physical Apparatus with the Most Limited Means", p. 119.