Google Search www Search www.sas.org
Got a comment?
Write to us!

We welcome your comments. Please include the following in your e-mail:

1. Always include "TCS Letter: OK to Publish" in the subject line to give your permission for us to publish your letter. This saves us the time of having to request your permission.

2. Always include your first and last name and your telephone number. We cannot acknowledge or publish e-mails with out your first name, a valid e-mail address and a telephone number for possible verification.

Letters may be lightly edited for spelling, style and grammar.

What is This?

Scott Vincent

I noticed your web site and thought I would forward these contrail photos. I've not seen any like this before, but maybe I'm just unobservant and it is a natural phenomenon. More

Forrest Mims' World of Science
by Forrest M. Mims III

Editorial: Science Fair Time by Forrest M. Mims III

Wanderings with Ralph Coppola

Backscatter. Views and responses from TCS readers.

Lab Tips Robert A. Warren

Eye on the Sky: The December Sky by Paul Curtin

Response to "Questions and Answers about Climate Change" by Forrest M. Mims III

Kevin T. Kilty

"What is going on here?" asks Forrest Mims (Editorial, TCS, 11 March 2005). Why do countless web sites all appear to present unbalanced views of climate change?". More.

LABRats Receives $150,000 Grant

Alaska Bans Home Cyclotron

Growing Lava Delta Collapses into the Pacific off Hawai'i's East Coast

Math Whiz Wins $100,000 Grand prize in 2005-06 Siemens Westinghouse Competition

A Quick Guide to Building Bots: Rapid Prototyping Techniques for the Novice Robot Hobbyist

Don Wilcher

Building robots is as much an art as a science. Various techniques are used in constructing autonomous mobile robots and intelligent walkers. The selection of a technique is usually based on the availability of construction materials. More

Sonoluminescence: The Ultimate Water Hammer Confronts a New Generation

Mark Valentine, Electrical Engineer

Single bubble sonoluminescence (SBSL) is a process by which a nearly invisible bubble of gas is acoustically levitated and made to oscillate in a fluid medium, More

Algorithms for Mental Conversion between the Fahrenheit and Celsius Scales

Robert A. Warren

Yes, quick mental conversions can be made between the Fahrenheit and Celsius scales, using the algorithms presented in this paper. But before these algorithms are presented, some background material is needed. More.
Updated 9 December 2005
 
 

In 1992 and 1994 two discoveries were made that have had a major impact on the scientific community. These finds, the Schaefer and Hebior mammoths, were discovered and excavated in Kenosha County, Wisconsin, through the efforts and skills of a number of individuals. More.

Sideways Gravity in the Basement: Norman Scheinberg's Cavendish Experiment

John W. Dooley,

Physics Department, Millersville University

Norman Scheinberg is a professor of electrical engin- eering at The City College of the City University of New York. He built a Foucault pendulum in his basement just to see if he could get it to work. More
   
Copyright 2005 by Society for Amateur Scientists