Circular Sundial

 

Code Number: 8A05.50

Demo Title: Circular Sundial

Condition: Good

Principle: Earth Inclination and Position on Earth

Area of Study: Astronomy

Equipment: 

Sundial.

Procedure:

Sundial set for a latitude of 41 degrees 40 minutes North and a longitude of 91 degrees 31 minutes West.  Set the sundial up so that it is facing in a straight North, South and East, West alignment.

References:

  • Barbara Rovšek, "Observe Your Shadow", TPT, Vol. 54, #4, Apr. 2016, p. 223.
  • Alejandro Gangui, "Fixing the Shadows While Moving the Gnomon", TPT, Vol. 53, #4, April 2015, p. 199.
  • Michael J. Burin, "Some Daytime Activities in Solar Astronomy", TPT, Vol. 43, #1, Jan. 2016, p. 36.
  • Barbara Rovšek, "Calibration of a Horizontal Sundial", TPT, Vol. 48, #6, Sept. 2010, p. 397.
  • David P. Stern, "Sundials and Compasses", TPT, Vol. 41, #7, Oct. 2003, p. 380.
  • Harry Manos, "Galileo's Lens", TPT, Vol. 41, #5, May 2003, p. 268.
  • Michelle B. Larson, "Constructing a Portable Sundial", TPT, Vol. 37, #2, Feb. 1999, p. 113.
  • Jim Cowan, "Solar Observations in a Classroom", TPT, Vol. 33, #6, Sep. 1995, p. 327.
  • Richard Hansgen, "Response to Egler", TPT, Vol. 33, #5, May 1995, p. 262.
  • Robert A. Egler, "Definition of Angles", TPT, Vol. 33, #5, May 1995, p. 262.
  • Richard Hansgen, "Watching the Earth Spin: A Determination of Midday", TPT, Vol. 33, #2, Feb. 1995, p. 116.
  • Malcolm M. Thomson, "Sundials", TPT, Vol. 10, #3, Mar. 1972, p. 117.
  • Philip M. Sadler, "An Ancient Time Machine: The Dial of Ahaz", AJP, Vol. 63, #3, Mar. 1995, p. 211.
  • V. Zanetti, "A Sundial Design", AJP, Vol. 52, #2, Feb. 1984, p. 185.
  • Herman Erlichson, "The Horizontal Sundial", AJP, Vol. 42, #5, May 1974, p. 372.
  • 50 Fun Experiments for the Mad Scientist in You, "Make a Sundial", National Geographic Kids, p. 130.
  • "For Word Nerds", Uncle John's Bathroom Reader, p. 269.
  • "How to Lay Out A Sundial", The Boy Scientist, p. 52.
  • "The Science of the Sundial", The Boy Scientist, p. 42.
  • "Build Your Own Sundial", The Girl Mechanic Goes Outdoors, ISBN 978-1-58816-801-6, p. 97 - 107.
  • Ron Hipschman, "Sun Dial", Exploratorium Cookbook II, p. 134.1 - 134.5.
  • Martin L. Keen, Let's Experiment: Over 150 Safe, Easy Experiments for Junior Scientists to Perform at Home, p. 36 - 40.
  • H. S. Stuttman, "Sun Dial", The New Illustrated Science and Invention, p. 2665 - 2666.
  • Shar Levine & Leslie Johnstone, "Here Comes the Sun", Everyday Science, p. 41 - 43.
  • Janice VanCleave, "#5, Lower", Janice VanCleave's 203 Icy, Freezing, Frosty, Cool, and Wild Experiments.
  • D. Tattersfield, "5.13, The Sundial", Project & Demonstrations in Astronomy, p. 93.
  • Rudolf F. Graf, "How to Tell Time with a Compass", Safe and Simple Electrical Experiments, p. 65.
  • Dr. Gordon Stables, R.N., C. Stansfeld Hicks, J. N. Maskelyne, Rev. Harry Jones, M.A, Dr. Stradling, Captain Crawley, Rev. A. n. Malan, M.A., F.G.S., and Many Others, "Chapter XLIV - How to Make a Pocket Compass and Timepiece", The Boy's Own Book of  Indoor Games and Recreations, A Popular Encyclopaedia for Boys, p. 396.
  • Dr. Gordon Stables, R.N., C. Stansfeld Hicks, J. N. Maskelyne, Rev. Harry Jones, M.A, Dr. Stradling, Captain Crawley, Rev. A. n. Malan, M.A., F.G.S., and Many Others, "Chapter XXXV - How to Make a Sundial", The Boy's Own Book of  Indoor Games and Recreations, A Popular Encyclopaedia for Boys, p. 347.
  • "The Sun Dial", Pike's Illustrated Catalogue of Scientific & Medical Instruments, 1984, p. 135.