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| Antifreeze, cheap materials may lead to low-cost solar energy Posted: 04 Jul 2013 07:08 AM PDT A process combining some comparatively cheap materials and the same antifreeze that keeps an automobile radiator from freezing in cold weather may be the key to making solar cells that cost less and avoid toxic compounds, while further expanding the use of solar energy. |
| White dwarf star throws light on possible variability of a constant of Nature Posted: 04 Jul 2013 06:50 AM PDT Astronomers have studied a distant star where gravity is more than 30,000 times greater than on Earth to test the controversial theory that one of the constants of Nature is not a constant. The researchers used the Hubble Space Telescope to measure the strength of the electromagnetic force -- known as alpha -- on a white dwarf star. The results do not contradict the variable-constant theory. |
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