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Contents
- Sweet Confusion: Does high fructose corn syrup deserve such a bad rap?
- Closed Thinking: Without scientific competition and open debate, much psychology research goes nowhere
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Contents
- A mind for math: A part of the brain associated with making memories may also predict success in learning math
- Teens take home science gold: A low-cost, self-driving vehicle; battery alternatives and analyses of galaxy clusters claim top prizes at a global high school science competition
- Flagging loose bolts: “Smart alert washer” automatically flags when a nut is coming loose, warning of potential danger
Web edition: December 4, 2009
Print edition: December 19, 2009; Vol.176 #13 (p. 4)
LOW-MELTING ELEMENTS MAKE HIGH HEAT MATERIAL — Two chemical elements, both of which will melt in the sun on a hot day, have been combined to produce a material capable of withstanding temperatures up to 1,500 degrees Fahrenheit. Gallium phosphide, a yellow compound resembling ground glass, has been prepared from gallium … and phosphorus…. The material may be used in building solar-cell power plants for space stations, and tiny rugged electronic parts for missiles, satellites and space probes of the future. So far the Army Signal Corps has built an electronic diode of gallium phosphide which has withstood temperatures seven times higher than those withstood by the now-used silicon and germanium.
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