Uncategorized
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Explore Antarctica with Nomad
Follow the daily activities of Nomad, a roving robot searching for meteorites in Antarctica, at the Big Signal interactive Web site, developed by Peter Coppin of the STUDIO for Creative Inquiry in Carnegie Mellon’s College of Fine Arts. Check out daily progress reports, obtain background information, learn about telerobotics, and get a hint of what […]
- Math
Jazzing Up Euclid’s Algorithm
Earlier this year, the journal Computing in Science & Engineering (CISE) published a list of the top 10 algorithms of the century (see http://computer.org/cise/articles/Top_Algorithms.htm). “Computational algorithms are probably as old as civilization,” Francis Sullivan of the Institute for Defense Analyses’ Center for Computing Sciences in Bowie, Md. noted in an editorial in the January/February issue […]
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Biological clock study challenged
A report disputes the controversial notion that bright light applied to skin can reset a person's biological clock.
- Health & Medicine
Worm genes take on bacterial foes
Creatures as simple as worms have an effective immune defense.
- Archaeology
Ancient birth brick emerges in Egypt
Investigations at a 3,700-year-old Egyptian town have yielded a painted brick that was used in childbirth rituals.
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19101
Hickling and Lee, whose work was described in this article, might consider a piezoelectric crystal as a point-source speaker. One would need to figure out a proper coupling-to-substrate scheme to separate the acoustic and substrate vibrational pathways. Yves KrausMansfield Center, Conn.
- Chemistry
Questions of Origin
Two new studies renew controversy about the authenticity of a map that may be the first depiction of North America.
- Chemistry
Tums of the Sea
Ocean scientists question whether the seas can handle rising carbon dioxide concentrations.
- Anthropology
Ancient populations were game for growth
Archaeological evidence of a Stone Age shift in dietary preferences, from slow to swift small game, suggests that the human population rose sharply sometime between 100,000 and 50,000 years ago.
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From the February 1, 1930, issue
WHOSE MEMORY LIVES IN THIS EGYPTIAN TOMB? The great tomb of an unknown Egyptian who lived about 2800 B.C. has been discovered and entered by the expedition from the Museum of the University of Pennsylvania, working at Meydum, fifty miles south of Cairo. A report just received from the director, Alan Rowe, states that the […]
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Beams of Our Lives
What are energy beams? How do they carry information, cure disease, illuminate distant points, or create images on our television screens? Answers to these and other questions you probably never thought to ask can be found on a Web site hosted by the Center for Beam Physics at the Lawrence Berkeley National Laboratory. Funky stick […]
- Math
A Minimal Winter’s Tale
The organizers of the Breckenridge snow sculpture championships in Colorado must be getting used to having a mathematical element in their annual competition. A simple version of Enneper’s surface just before (above) and just after (below) it self-intersects. The award-winning snow sculpture of Enneper’s surface. For the second year in a row, a team assembled […]
