Physics

// Friday, July 1, 2005 Hal Harris
This year marks a century since Albert Einstein published five of the most influential papers in the history of science, all submitted between March and September of 1905.
// Saturday, January 1, 2005 Hal Harris
How do you know that no two snowflakes are exactly alike? Does it matter? For the scientist, the similarities between snowflakes are just an interesting, and probably much more important, than their differences. The author of the text in "The Snowflake" is Chairman of the Physics Department at Caltech.
// Friday, October 1, 2004 Hal Harris
In his surprise 1959 bestseller about Kepler, The Sleepwalkers, Arthur Koestler claimed that Nicolaus Copernicus' book, De Revolutionibus had very little influence on the other astronomers of his time because it was little-read.
// Wednesday, September 1, 2004 Hal Harris
Robert Hooke's name is familiar to most of us only because of "Hooke's Law", f = - kx, which describes the potential for a harmonic oscillator. I became aware of some of the other contributions of this remarkable man by reading one of Lisa Jardine's previous books, "Ingenious Pursuits", which was my pick for May, 2000.
// Saturday, May 1, 2004 Hal Harris
What would you say are the greatest scientific ideas that mankind has discovered? Most of us chemists would say that the notion that matter consists of atoms would have to be one of them, and physical chemist Peter Atkins does not disappoint us on that score. He also treads ground familiar to us when he describes entropy and energy, and evolution and DNA.
// Monday, March 1, 2004 Hal Harris
Many teachers of science use the automobile to exemplify the principles they wish to teach, whether it be the mechanics of acceleration or angular momentum, gearing, or the aerodynamics of drag.