On MovieTome: See the new trailer from STREET FIGHTER!
Find Articles in:
all
Business
Reference
Technology
News
Sports
Health
Autos
Arts
Home & Garden
advertisement
CIO SessionsVision Series on ZDNet

See and hear what CIOs the world over thinks about the business of technology and how it's changing the way we live and work.

Most Popular White Papers
advertisement

Content provided in partnership with
Thomson / Gale

Odd shape

Science News,  August 5, 2006  by Ellery Frahm

When I looked at the photo for "As waters part, polygons appear" (SN: 6/3/06, p. 348), I didn't see a "pentagonal shape" in the swirling water. I saw a sine wave, wrapped around a circle. I was immediately reminded of the Bohr--de Broglie model of electron orbits forming standing waves. Rather than swirling water and glycol forming "unexplained" polygons, isn't this simply a standing-wave phenomenon?

ELLERY FRAHM, MINNEAPOLIS, MINN.

Combinations of circles and standing sine waves might explain the observed shapes, agrees Tomas Bohr of the Technical University of Denmark. But his team has been unable to use the circle-sine wave model to explain how shapes vary as experimental parameters change.--P. WEISS

COPYRIGHT 2006 Science Service, Inc.
COPYRIGHT 2008 Gale, Cengage Learning