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Richard Jernigan -> RE: photo of the century (Feb. 2 2011 17:56:56)
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quote:
ORIGINAL: Ruphus
In the late eighties this case appeared valuable enough for German states TV to report on it in the news as spectacular invention.
Maybe the other interesting aspect was that such a motor was not much bigger than ~ 12 cm long and ~ 2 cm in diameter, readily designed so that hundreds of it could be combined to a powerful motor unit.
Also I guess that your data refer to todays battery capacity, which might differ from that of batteries from over 20 years ago.
Ruphus
I have a souvenir copy of "Scientific American" on a shelf near my desk. I kept it because it contains an article on the U.S. Space Surveillance Network that is free of major errors. It is the only such article I have read in the general press, about a major government research project that I had personal knowledge of, in more than 40 years of engineering, that did not contain significant errors of both fact and emphasis. I'm talking about the New York Times, Scientific American, Los Angeles Times, Washington Post, and so on. I will except Aviation Week and Space Technology, who were often accurate. I have no knowledge of the German state TV service, but I find the press very unreliable when it comes to evaluating science and technology.
The alkaline battery technology I indicated has changed very little in the past 30 years. Rechargeable batteries employing lithium, lithium ion and nickel metal hydride technologies have penetrated the market in the last 20 years, but I was not referring to them.
RNJ
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