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 The Dobson Fly
Tigh Walters
I live in Austin, Texas, and noticed this Dobson fly (family Corydalidae) on the limestone wall just outside my front door.
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Leaving Science: Occupational Exit from Scientific Careers
Anne E. Preston, Russell Sade Foundation, New York, 2004, 201 pages.
ISBN: 0-87154-694-9
Reviewed by Michael Reed
Anne E. Preston is associate professor of economics at Haverford College, Pennsylvania. In Leaving Science, Prof. Preston describes some of the reasons why people leave their careers and majors in science for other fields, such as medicine and law.
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Labrats Update by Shawn Carlson: Lesson Fourteen
Ready for your introduction to nuclear physics?
If you think that sub-atomic particles, cosmic rays and nuclear decays are things that only a professional scientist can observe, you're in for a treat.
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Thoughts About Amateur Science in a Museum Setting
Fred Schueler
In this usually quiet small-house subdivision backing onto rich woods, a clot of teenagers have interrupted their shoving and insulting of each other to mock and heckle me because my headlamp identified me to them as "a scientist."
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A Layman Views Our Expanding Universe Through the Lens of Hubble’s Law
Paul F. Deisler, Jr., Ph.D.
Simple derivations based on Hubble’s Law provide a logical understanding of the homogeneous expansion of our Universe, accessible to non-experts like the author. Four major phenomena are examined: the deceleration/acceleration of spatial expansion; the Hubble Sphere; the Observable Universe; and how a photon moves through expanding space from an emitter to an observer.
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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
Orchard Oriole (15-21 June 2007)
A yellow-green bird showed up in our nets one day. Turns out it was a female orchard oriole, a relatively common Carolinas nester we seldom catch and band.
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Quantum Mechanics Mini-Lesson
Shawn Carlson
Executive Director, Society for Amateur Scientists
Recently the following letter arrived at SAS:
Dr. Shawn,
I’m very confused about the properties of photons. When I used de Broglie’s equation, I found that a photon would have a mass inversely proportional to its wavelength, which I can’t understand because I thought photons were not supposed to have mass.
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