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A Rare Dragonfly Encounter

Denise Greaves and Sheldon Greaves

Last fall we had a unique dragonfly experience at Great Swamp Management Area near South Kingston, Rhode Island. Although temperatures were beginning to cool, it was pretty good dragonfly weather. More.

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

Editorial: More Questions and Answers About Climate Change
by Forrest M. Mims III

Wanderings with Ralph Coppola

Eye on the Sky: The April Sky by Paul Curtin

Mathematics Corner: What does f ' (n) mean?
George E Hrabovsky

Mind of a Theorist: Another Mathematical Interlude: What is a derivative?
George E. Hrabovsky

Puzzle 'Toons by Brian Mansfield

Classics: "The Amateur Scientist Classics" A Primer on Soap Bubbles
Shawn Carlson

"Historical Dynamics: Why States Rise and Fall" by Peter Turchin, Princeton University Press, 2003.
Reviewed by Kevin T. Kilty

Sound gets fainter as the listener moves farther away from the source. In the previous article we found that dispersion causes decreasing intensity consistent with conservation of energy. More.

 Monarch Butterflies in Trouble

 Wrapping Up the Third Citizen Science Conference Photo Album (Page 5)

 The Venus Transit Across the Sun Reduced Sunlight at Earth

 Backscatter. Views and responses from TCS readers.

A Tool That Counts: Basic Statistics for the Amateur Scientist

Part 3. Reasonable Expectations and Helpful Principles

Mark Hartwig, Ph.D.

When presented properly, statistics is a fascinating subject that can open up new ways of looking at the natural world. Moreover, the basic principles are actually quite simple and can enhance anyone's critical thinking skills. More

Updating the Bikram Era Calendar of Nepal

Kedar Sharma, Galileo Astronomical Society, Pokhara, Nepal.

Two millennia have passed since the inception of the Bikram Era (BE) calendar, and the time has come to update it due to the effects caused by the precession of the equinoxes. This calendar is being used both in Nepal and India. More.

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.

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.
Updated 08 April 2005
 
 

The Sun and Sky Monitoring Station
by Forrest M. Mims III.

An excellent product for beginning scientists, seasoned amateurs (or even professionals) looking for a new challenge, or someone trying to come up with a reasonably self-contained science fair project. Briefly stated, this kit gives one the instrumentation needed to track accurately the total sunlight in a given time period, measure haze and water vapor in the atmosphere.

Click here to order.
   
Copyright 2005 by Society for Amateur Scientists