8A20.25 - Eclipse - Eclipse Model

Code Number:
Demo Title:
Eclipse - Eclipse Model
Lunar and Solar Eclipse
Area of Study:
Hoop Eclipse Demo.

The model is Earth centered.  So, Earth is in the center, then the lunar orbit around that, with the orbit of the sun as the outer ring.  The lunar orbit may be tilted so that you can see that there are only specific times or alignments of the objects that will result in an eclipse of some kind.

  • R. Suat Isildak, H. Asuman Kucukozer, Huseyin Kucukozer, and Kemal Yurumezoglu, "Using a Simple Method to Estimate (Approximate) the Angle Between the Lunar Orbit and the Ecliptic", TPT, Vol. 57, #6, Sept. 2019, p. 416.
  • Frank Daniel Lock, "Diagramming the Sun-Earth-Moon System", TPT, Vol. 57, #5, May 2019, p. 276.
  • Charles A. Eckroth, "A Demonstration of the Eclipse Seasons", TPT, Vol. 34, #6, Sept. 1996, p. 376.

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.