2C20.07 - Bernoulli's Principle - ????

Code Number:
Demo Title:
Bernoulli's Principle - ????
Bernoulli's Principle or is it really Coanda Effect
Area of Study:
Heat & Fluids
Vacuum Blower and Surface Entrainment Apparatus.

Place the outlet of the vacuum blower at the proper height so that 4 surface configurations of the entrainment apparatus can be moved under it as desired. Observe how the water will move upward in the tube without a surface attached, will show no movement in the tube with the flat surface, will move upward in the tube with the downward curve, and will move downward in the tube with the upward curve.

  • Panagiotis Koumaras and Georgios Primerakis, "Flawed Applications of Bernoulli's Principle", TPT, Vol. 56, #4, Apr. 2018, p. 235.
  • Martin Kamela, "Kamela's Response", TPT, Vol. 46, # 3, March 2008, p. 134.
  • Peter Eastwell, "Thinking Some More About Bernoulli", TPT, Vol. 46, # 3, March 2008, p. 134.
  • Martin Kamela, "Thinking About Bernoulli", TPT, Vol. 45, # 6, Sept. 2007, p. 379.
  • Albert A. Bartlett, "The Curious Case of the Well-Behaved Shower Curtain", TPT, Vol. 34, #7, Oct. 1996, p. 444.
  • Daniel Engber, "Why Do Shower Curtains Billow Inward?", Popular Science, Vol. 288, #2, Mar/Apr. 2016, p. 94.
  • Peter H. Eastwell, "Bernoulli? Perhaps, But What About Viscosity?", Science Time Education, Vol. 6, #1, 2007, p. 1.
  • Evan Jones, "Is Pressure Really Lower in a Moving Fluid?", Sierra College, 2009.
  • Clifford Bettis, "The Coanda Effect and Bernoulli's Principal", Colloquium Talk, University of Nebraska Lincoln, 2009.
  • Clifford Bettis, "To a Man with a Hammer...", Colloquium Talk, University of Nebraska Lincoln, 2009.
  • Curt Suplee, "Taking Bernoulli for a Ride", Everyday Science Explained, National Geographic, p. 54 - 55.
  • Julius Sumner Miller, Q152 & A152, Millergrams II – Some More Enchanting Questions for Enquiring Minds, p. 32 & 90.

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