Uncategorized
- Math
Art of Pursuit
The simple mathematical concept of a pursuit curve can serve as the starting point for creating wonderfully intricate artistic designs. Four “bugs” chasing one another produce an intriguing pattern of nested, rotated squares. Courtesy of John Sharp. Pursuit curves based on a star-shaped polygon. Courtesy of John Sharp. Example of a pattern in which the […]
- Math
Art of Pursuit
The simple mathematical concept of a pursuit curve can serve as the starting point for creating wonderfully intricate artistic designs. Four “bugs” chasing one another produce an intriguing pattern of nested, rotated squares. Courtesy of John Sharp. Pursuit curves based on a star-shaped polygon. Courtesy of John Sharp. Example of a pattern in which the […]
- Health & Medicine
Ebola May Enter Cell via Folate Gate
A cell-surface molecule that normally binds to folate might be targeted by Ebola and Marburg viruses as their entry point to people's cells.
- Earth
Power Harvests
Farmers are finding that commercial wind power is the best new commodity to come along in years, one that can offer substantial year-round income.
- Humans
Native American Geometry
The circle serves as starting point for this exploration of Native American geometry. Developed by Chris Hardaker for schoolchildren in Arizona, the Web site vividly illustrates the geometric principles that underlie Native American designs. Go to: http://www.earthmeasure.com/
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From the July 18, 1931, issue
AIR VIBRATIONS IN ORGAN PIPES REVEALED BY PATTERN IN SMOKE Making smoke rings in organ pipes, to show up the little cyclones that whirl in them when obstacles are placed in the openings, is the curious mode of research adopted by a London physicist, Prof. E.N. da C. Andrade of University College. These little cyclones, […]
- Health & Medicine
Reptilian drug may help treat diabetes
The synthetic version of exendin-4, a compound in gila monster venom, helps insulin injections control blood sugar in people with type I, or juvenile-onset, diabetes.
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18936
I am grateful to Science News for having achieved with your words what no doctor has managed in the past 20 years: cured my diabetes. I now find that my average blood sugar falls safely within the range 80 to 240 milligrams per deciliter cited in the article as normal. On the strength of this […]
- Health & Medicine
Thinking blurs when blood sugar strays
Blood sugar concentrations that are too high or too low can impair thinking and, in the case of low blood sugar, driving ability.
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18960
This concerns the story discussing the ability of flowers to protect their reproductive parts by closing up during a rain storm. I recently observed what may be other mechanisms to achieve the same end in flowers that can’t close up. As a storm approaches, Queen Anne’s lace dips its flat umbels to a vertical position […]
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Shut up! A thunderstorm’s on the way
The narrow-leafed gentian, a mountain blossom, is the first flower shown to close when a thunderstorm apporaches.
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A bad month for condors
Two California condors in the wild—a hatching and a just-released juvenile—died the same week, as a third went missing.
