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JCE ChemEd Xchange provides a place for sharing information and opinions. Currently, articles, blogs and reading lists from ChemEd X contributors are listed below. We plan to include other items that the community wishes to share through their contributions to ChemEd X.

Hal Harris's picture

Relativity and the Global Positioning System

Thu, 05/02/2002 - 02:00 -- Hal Harris

An ideal companion to "The Universe in a Nutshell" is this article by Neil Ashby, a Professor of Physics at University of Colorado - Boulder. Hand- held GPS devices have become standard equipment for boaters, hikers, and technology junkies. It is now taken for granted that one's position on the earth can be obtained within a few seconds, accurately, and free.

Hal Harris's picture

The Map That Changed the World: William Smith and the Birth of Modern Geology

Mon, 04/01/2002 - 00:00 -- Hal Harris

If the name "Simon Winchester" sounds familiar, it is probably because of his recent bestseller, "The Professor and the Madman", the history of how the Oxford English Dictionary was originally compiled. It is supposed to be very good, but I haven't had a chance to read it myself yet.

Hal Harris's picture

Backyard Ballistics: Build Potato Cannons, Paper Match Rockets, Cincinnati Fire Kites, Tennis Ball Mortars, and More Dynamite Devices

Sat, 03/02/2002 - 01:00 -- Hal Harris

This book is not politically correct, in an era in which school science experiments have been tamed to the point that there is little possibility that the teacher will kill or maim him/herself.

Hal Harris's picture

Vacuum Bazookas, Electric Rainbow Jelly, and 27 Other Saturday Science Projects

Fri, 03/01/2002 - 00:00 -- Hal Harris

Those of us who were fans of the old "Amateur Scientist" column of Scientific American will enjoy this collection of projects that look to be fun to build and to play with. These are all things that the author has invented or adapted for a Saturday Science Club for kids near his home in Guildford, UK.

Hal Harris's picture

Secret Knowledge: Rediscovering the Lost Techniques of the Old Masters

Fri, 02/01/2002 - 00:00 -- Hal Harris

I first wrote about the controversial thesis of this book back in January of 2000, when my "Pick" was an article about David Hockney by Lawrence Wechler in the New Yorker. With the publication of this very attractive, large-format book, you can look for yourself at the evidence that he argues shows that many of the great master painters secretly used optical devices to help produce their work.

Hal Harris's picture

Ice Memory

Wed, 01/02/2002 - 01:00 -- Hal Harris

Ice cores, bored through thousands of feet of stable glacial ice in Greenland, have proved to be our best record of global climate over more than a hundred thousand years.

Hal Harris's picture

Nine Crazy Ideas in Science: A Few of Them Might Even be True

Sat, 12/01/2001 - 00:00 -- Hal Harris

One of the goals of a course I teach in our Honors College is to provide non-science majors with the tools they need to differentiate authentic science from material that has merely been provided a "scientific" dressing. Physicist Robert Ehrlich has provided nine case studies that are ideal for this purpose. Do more guns in the hands of citizens decrease crime? Is AIDS really caused by HIV?

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