Uncategorized
- Math
Math as a Civil Right
A longtime activist in the civil rights movement now teaches that mathematical literacy is the key to full participation in the country's economy.
- Humans
Letters from the July 21, 2007, issue of Science News
Quantum leak? Perhaps there need not be “degrees of quantumness” (“Degrees of Quantumness: Shades of gray in particle-wave duality,” SN: 5/12/07, p. 292). As the beams pass increasingly closer to the surface, the plate will induce a small (but increasingly larger) spread of energies (hence wavelengths) in the electrons within the beam, possibly explaining the […]
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19858
This article was written as if this was a newly discovered technology. I have been using an electric shaver with induction recharging for years. Mike YorkPhoenix, Ariz. The ability to project electrical power some distance suggests a possible method to detonate or disable improvised explosive devices. Josef HeitWebster, N.Y. Several readers pointed out that wireless […]
- Physics
The Power of Induction
A new technology based on classical electromagnetic theory uses oscillating magnetic fields to transfer electric power wirelessly across a room.
- Math
Mathematical Lives of Plants
Mathematical models that capture the essence of biological growth mechanisms are beginning to reveal how plants develop structures with intriguingly elegant geometries.
- Astronomy
Help Spot Galaxies
Although computer programs can be written to sort galaxies into general categories, they would inevitably throw out the unusual, the weird and the wonderful, astronomers say. Because the human brain is much better at recognizing patterns, astronomers launched a site this week recruiting the public to help identify spiral galaxies on sky photos. Instructions are […]
- Math
Free Choice + Punishment = Cooperation
In a computer simulation of a multi-player game, cheaters didn't prosper when other participants could choose not to play.
- Humans
From the July 10, 1937, issue
Photographing the earliest developmental stages of opossum eggs, a 'heavy electron' in cosmic rays, and teaching chimpanzees to use sign language.
- Physics
Pulling Strings: Stretching proteins can reveal how they fold
Unfolding a single protein by pulling on its ends reveals the molecular forces that make it fold up.
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Forget About It: How the brain suppresses unwanted memories
Two newly discovered neural processes give people the ability to intentionally forget upsetting memories.
- Astronomy
Shattering Find? Comet fragments show surprising uniformity
Close observations of fragments of a comet indicate that its interior was remarkably similar to its surface, meaning that repeated solar heating didn't much change its outer layers.
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19857
This article says that “there may be some fundamental difference in susceptibility to nicotine addiction between people who develop Parkinson’s and those who don’t.” If so, how would you explain the fact that “after smokers stubbed out their last butts, the protective effect faded”? Tobacco smoking is becoming unpopular, and for good reason, but I […]
