Code Number: 4A30.20
Demo Title: Expansion & Contraction Demo - Ball and Ring
Condition: Good
Principle: Expansion & Contraction with Temperature Variation
Area of Study: Thermodynamics
Equipment:
Ball and Ring Sets (2), Gloves, Bunsen Burner, and Grill Lighter.
Procedure:
MAKE SURE that the ball and ring are separated before they are allowed to cool.
Show that the ball will not go through the ring when both parts are cool. Heat the ring for about 45 seconds in the flame of a Bunsen burner. It should expand enough so that the ball will easily go through the ring.
References:
- Paul Hewitt, "Figuring Physics, TPT, Vol. 62, #5, May 2024, p. 386.
- M. McHugh and V. McCauley, "Getting Hooked on Physics!", TPT, Vol. 54, #9, Dec. 2016, p. 548.
- Thomas B Greenslade Jr, "Apparatus Named After Our Academic Ancestors — II", TPT, Vol. 49, #1, Jan. 2011, p. 28.
- Thomas B. Greenslade Jr., "Gravesande's Apparatus (Photo)", AJP, Vol. 73, #4, Apr. 2005, p. 371.
- "H-114. Ball and Ring", DICK and RAE Physics Demo Notebook, 1993.
- G. D. Freier and F. J. Anderson, "Ha-7", A Demonstration Handbook for Physics.
- Julius Sumner Miller, Q11 & A11, Millergrams I – Some Enchanting Questions for Enquiring Minds, p. 20 & 78.
- Julius Sumner Miller, Q58 & A58, Millergrams I – Some Enchanting Questions for Enquiring Minds, p. 40 & 97.
- Julius Sumner Miller, Q102 & A102, Millergrams I – Some Enchanting Questions for Enquiring Minds, p. 65 & 113.
- Joseph Frick, "# 346 - Expansion of Solids", Physical Technics: Or Practical Instructions for Making Experiments in Physics and the Construction of Physical Apparatus with the Most Limmited Means, p. 412.
- The Queen Catalogues Vol. II, Catalogue of Physical Instruments, No. 4906, p. 55.