6A70.28 - Binoculars

Code Number:
Demo Title:
Lens Systems and Focal Lengths
Area of Study:
Binoculars and Optic Wonder.

The specifications on the binoculars are these, 10 Power, 50mm objective lenses, Field of View: 288 ft. at 1000 yds., and Bar Fast Focus.

The optics wonder is just a tubeless binocular that can be folded down for carrying.

  • Richard Didsburry, "Binocular Vision - A Simple Demonstration", TPT Vol. 18, #8, Nov. 1980, p. 595, also A Potpourri of Physics Teaching Ideas - Optics and Waves, p. 214.
  • Kevin Dupzyk and Tom McLellan, "Binoculars", Popular Mechanics, Vol. 196, #5, July/August 2019, p. 16 - 17.
  • T. D. Rossing and C. J. Chiaverina, "4.10, Telescopes and Microscopes", Light Science, Physics and Visual Arts, p. 95.
  • The Queen Catalogues Vol. I, Catalogue of Meteorological Instruments, p. 4.

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.