Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published February 1, 1979 | public
Journal Article Open

Mountain shadow phenomena

Abstract

Regardless of profile, whether flat topped or pointed, to the summit observer all mountain peaks cast triangular shadows when the sun is low. A theory for such anomalous shadows is developed. The shadow apex angle is shown to depend only on the ratio of the breadth of the mountain to its height.

Additional Information

© Copyright 1979 Optical Society of America Received 25 May 1978. We acknowledge the stimulus provided by Kathy DeGioia, University of Wyoming, who inquired of us why the shadows are pyramidal. Pierre Turon, Gary Ladd, Frank Recely, and Martin Cohen contributed photographs, and E. Hiei, Tokyo Astronomical Observatory, found the material on Mt. Fuji. Kitt Peak National Observatory is operated by the Association of Universities for Research in Astronomy, Inc., under contract with the National Science Foundation.

Files

LIVao77.pdf
Files (349.8 kB)
Name Size Download all
md5:dbc6242d1641a4f0a2c067e16dfd573d
349.8 kB Preview Download

Additional details

Created:
August 22, 2023
Modified:
October 16, 2023