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Comet McNaught
Bob Townsend
This image of the McNaught Comet was taken on 12 January 2007 shortly after sunset when the comet was at perihelion and about five degrees from the sun. |
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TOPS, a Hand-held Instrument that Measures the Ozone layer
Forrest M. Mims III,
Editor
Over the years I have received many requests for "How to Measure the Ozone Layer," an article featured on the cover of Science Probe! magazine in November 1992. The article describes in detail how to assemble TOPS (Total Ozone Portable Spectrometer), a miniature instrument that can measure the ozone layer with an accuracy rivaling professional instruments costing tens of thousands of dollars.
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Build a Mini Walking Bot!
Don Wilcher
Copyright © 2006
Building robots doesn't require an elaborate machine shop or sophisticated electronics tools and accessories. What is really required is imagination, some basic electronic components, a solderless breadboarding station and a good motorized construction kit.
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Labrats Update by Shawn Carlson: Lesson Eight
In Lesson Seven we learned about feedback, that very important principle that governs all things whose rates of growth depend on their size. Things are said to have positive feedback if their rate of growth gets larger as the things themselves get larger.
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How I Photographed a Pollen Corona at Sunset
Terri Sharp
On 5 January 2007, my phone rang. My Mother Eugenia ("Tex") Sharp was out of breath and trying to tell me something. Alarmed, I started walking to her condo next door to mine. Finally she sputtered, "Look outside over your balcony!"
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An Unpublished Letter from Albert Ingalls
Anna Hillier
An archive can be as simple as a box of papers that an organization has deemed to be important. I was given several boxes which had been handed down from one estate to another.
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A Special Report to SAS Members
My Adventures with Views From Science.com
Ely Silk
Back in early 2002, the founder of the Society for Amateur Scientists (of which I've been a member since its inception) contacted me. Shawn Carlson told me that he was planning the first conference of the SAS to be held in Philadelphia in June of that year.
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Working with teachers and students on scientific research
Kevin Czajkowski
Associate Professor (Geography and the Lake Erie Center)
Department of Geography and Planning
The University of Toledo
Toledo, Ohio USA
MODIS (Moderate Resolution Imaging Spectroradiometer) is an instrument on NASA's Terra and Aqua satellites that monitors the earth below, including clouds, snow and atmospheric aerosols.
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This Week at Hilton Pond
Bill Hilton Jr.
Executive Director
Hilton Pond Center for Piedmont Natural History
York , South Carolina 29745 USA
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