Dark on a light subject
Article Abstract:
There were considerable differences of opinion among 19th century physicists about the speed of light. Determinations of the speed of light were first undertaken in Paris, France, by Armand Fizeau and Jean Foucault in 1851. These measurements were repeated in Glasgow, Scotland, by James Young and George Forbes, who in 1881 reported that blue light travels 1.8% faster than red. Comments on this work were made by mathematician and physicist Lord Rayleigh. He made an error when expressing his belief that Foucault's method measured the speed of light as u. It was subsequently shown that worked undertaken by Americans Willard Gibbs and Albert Abraham Michelson was most accurate.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Eastern Europe still strapped for cash...
Article Abstract:
Central-east European countries that are candidates for European Union (EU) membership are not planning to increase their research spending significantly next year, and there are concerns that they will not be in a position to benefit from their status as associates of the fifth Framework programme of research (FP5). The lack of research investment is also jeopardizing the future of research in those countries by restricting the amount of internationally competitive work possible and keeping public sector salaries low.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Still in the dark
Article Abstract:
Scientists Newell et al have used particle detectors on board satellites to show that aurorae are not found more often at the peak of the solar cycle. Evidence suggests that the ionospheric feedback model for auroral arcs is correct. Horizontal conductivity gradients may generate currents through the ionosphere. A number of other hypothesis regarding the presence and characteristics of aurorae are discussed.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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