The Triangular Binary Clock

  • 1 III. Physikalisches Institut B, RWTH Aachen University

Abstract

A new idea for a binary clock is presented. It displays the time using a triangular array of 15 lamps each representing a certain amount of time. It is shown that such a geometric, triangular arrangement is only possible because our system of time divisions is based on a sexagesimal system in which the num- ber of minutes in 12 hours equals the factorial of a natural number (720 = 6!). An interactive applet allows one to “play” with the clock.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • [1] Pretz, J. “A different way to read o the time - A new idea for a binary clock”, Journal of Recreational Mathematics, Vol. 35(4), 327{330, arXiv:1006.1373v1 [math.HO], 2006.

  • [2] Neugebauer, O. The Exact Sciences in Antiquity, Barnes & Noble, New York, 1993.

  • [3] Wikipedia article. “Babylonia”: http://en.wikipedia.org/wiki/Babylonia

  • [4] Richard A., Carrigan, Jr. “Decimal time”, American Scientist, 305(78), 66, 1978.

  • [5] Wikipedia article. “Decimal time”: http://en.wikipedia.org/wiki/Decimal_time

OPEN ACCESS

Journal + Issues

Recreational Mathematics Magazine is a journal for mathematicians who enjoy imaginative ideas, non-standard approaches, and surprising procedures. The journal addresses such topics as: games and puzzles, problems, mathmagic, mathematics and arts, math and fun with algorithms.

Search