2B60.30 - Siphons, Self Starting Siphons, & Tantalus Cups

Code Number:
2B60.30
Demo Title:
Siphons, Self Starting Siphons, & Tantalus Cups
Condition:
Good
Principle:
Pressure vs. Water Height
Area of Study:
Heat & Fluids
Equipment:
Skimit Magic Siphon, Homemade Glass Siphon, and Siphon with Squeeze Bulb.
Procedure:

Video Credit: Jonathan M. Sullivan-Wood.

Fill the Plexiglas cube nearly to the top with water. The homemade glass and the Skimit siphons are self starting. Insert and hang these on the edge of the Plexiglas cube. The siphon flow will start automatically.

The bulb siphon uses vacuum to draw the liquid up into the tube. The bulb may have to be squeezed several times to get the liquid to the proper height.

The Tantalus or Pythagorean cups are nothing more than self starting siphons. Very cool but watch out, you will get wet if you aren't careful!!

References:
  • William Jumper and Simthyrearch Dy, "What the CO2 Siphon Tells Us", TPT, Vol. 56, #6, Sept. 2018, p. 373.
  • William D. Jumper and Boris Stanchev, "Towards Explaining the Water Siphon", TPT, Vol. 52, #8, Nov. 2014, p. 474.
  • Alex Richert and P. -M. Binder, "Siphons, Revisited", TPT, Vol. 49, #2, Feb. 2011, p. 78. 
  • Martin Gardner, "Physics Trick of the Month: Mysterious Siphon", TPT, Vol. 39, #9, Dec. 2001, p. 561.
  • Paul Chagnon, "Animated Displays V: Relaxation Oscillators", TPT, Vol. 32, # 7, p. 432- 436, Oct. 1994.
  • Raymond E. Benenson, "The Hyphenated Siphon", TPT, Vol. 29, #3, Mar. 1991, p. 188.
  • Henry S. Badeer and James W. Hick, "Role of Viscous Resistance in Siphon Flow", TPT, Vol. 28, #8, Nov. 1990, p. 558.
  • R. D. Edge, "String & Sticky Tape Experiments: A Siphon Demonstration", TPT, Vol. 26, #2, Feb. 1988, p. 114.
  • E. J. Ansaldo, "On Bernoulli, Torricelli, and the Syphon", TPT, Vol. 20, #4, Apr. 1982, p. 243.
  • Thomas B. Greenslade, Jr., "A Potpourri of Siphons", TPT, Vol. 15, #7, Oct. 1977, p. 425.
  • Thomas B. Greenslade, Jr., "Dribble Glasses (Photo)", AJP, Vol. 78, #6, June 2010, p. 615.
  • Thomas B. Greenslade, Jr., "Tantalus' Cup (Photo)", AJP, Vol. 71, #1, Jan. 2003, p. 45.
  • James H. Vignos, "Comment on: Relaxation Oscillators: Electrical and Water", AJP, Vol. 40, #2, Feb. 1972, p. 360.
  • Glen Davidson, "Siphoning Off the Last Word", Physics Today, Vol. 64, #11, Nov. 2011, p. 10.
  • Arthur G. Schmidt, "Siphon Uses Atmospheric Pressure", Physics Today, Vol. 64, #4, Apr. 2011 p. 11.
  • Toni Feder, "Physicist Uncovers Dictionary Error", Physics Today, Vol. 63, #8, Aug. 2010, p. 28.
  • Robert Ehrlich, "6.6, Maximum Height of a Siphon", Why Toast Lands Jelly-Side Down, p. 104.
  • John Henry Pepper, "Pneumatics", Cyclopadic Science Simplified, p. 462.
  • R. W. Pohl, "(3)", Physical Principles of Mechanics and Acoustics, p. 182.
  • R. W. Pohl, "Relaxation Oscillations", Physical Principles of Mechanics and Acoustics, p. 228.
  • Charles Vivian, "Make a Simple Siphon", Science Experiments & Amusements For Children, p. 45.
  • Martin Gardner, "10, The Mysterious Siphon", Smart Science Tricks, p. 22.
  • Martin Gardner, "Self-Starting Siphon", Entertaining Science Experiments with Everyday Objects, p. 112.
  • Jearl Walker, "2.41, Siphons and Toilets", The Flying Circus of Physics Ed. 2, p. 99.
  • Christopher P. Jargodzki and Franklin Potter.  "107, The Siphon",  Mad About Physics,  p. 38, 182.
  • Nail A. Downie, "16, A Symphony of Siphons", Vacuum Bazookas, Electric Rainbow Jelly, p. 134.
  • Tik L. Liem, "The Self-Priming Siphon", Invitations to Science Inquiry - Supplement to 1st and 2nd Ed. p. 32.
  • Francisco Vera, Rodrigo Rivera, Diego Romero-Maltrana, Jaime Villanueva, "Negative Pressures and the First Water Siphon Taller than 10.33 Meters", PLOS ONE, April 7, 2016.
  • Joseph Frick, "#104 - The Siphon", Physical Technics: Or, Practical Instructions for Making Experiments in Physics and the Construction of Physical Apparatus with the Most Limited Means", p. 124.
  • "Tantalus Cup", Pike's Illustrated Catalogue of Scientific & Medical Instruments, 1984, p. 232.










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