1A60.22 - Scaling - Zoological Domain

Code Number:
1A60.22
Demo Title:
Scaling - Zoological Domain
Condition:
Excellent
Principle:
Zoological Domain
Area of Study:
Mechanics
Equipment:
Protoplanet Demo from 8A70.82, Boiling Water, Hot Plate, and Infrared Camera.
Procedure:

Bring all three different size balls to the same temperature with the boiling water.  Place them in the rack side by side and observe them over a period of 20 minutes with the infrared camera.  You will observe that the smaller ball looses heat much faster than the medium size ball, that that the small and medium size balls looses heat much faster than the large ball.  This is one way to show that small animals need much more energy to be able to maintain the same constant temperature of a large animal.

References:
  • Kurt Vandervoort, "Animal Size and Heat Transfer", TPT, Vol. 58, #2, Feb. 2020, p. 104.
  • Michael J. O’Shea, "Backpack Weight and the Scaling of the Human Frame - II", TPT, Vol. 56, #2, Feb. 2018, p. 79.
  • Scott Lee, "Scaling in Theropod Dinosaurs: Femoral Bone Strength and Locomotion II", TPT, Vol. 53, #3, Mar. 2015, p. 158.
  • Scott Lee, "Scaling in Theropod Dinosaurs: Femoral Bone Strength and Locomotion", TPT, Vol. 53, #2, Feb. 2015, p. 84.
  • Michael J. O’Shea, "Backpack Weight and the Scaling of the Human Frame", TPT, Vol. 52, #8, Nov. 2014, p. 479
  • Thomas R. Tretter, "Godzilla Versus Scaling Laws of Physics", TPT, Vol. 43, #8, Nov. 2005, p. 530.
  • Boye K. Ahlborn and Robert W. Blake, "Lower Size Limit of Aquatic Mammals", AJP, Vol. 67, #10, Oct. 1999, p. 920.
  • Robert H. Stinson, "Simple Scaling Model for Biological Systems", AJP, Vol. 45, #5, May 1977, p. 498.

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.