Subject:
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Re: Evolution of Earth and moon (was: Couldn't resist)
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Newsgroups:
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lugnet.space, lugnet.off-topic.geek
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Date:
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Wed, 11 Jul 2001 01:18:03 GMT
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Viewed:
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8751 times
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In lugnet.space, Larry Pieniazek writes:
> In lugnet.space, Lindsay Frederick Braun writes:
> > Weren't there other methods used recently as well? I'm not
> > sure that any would be as accurate as a laser, given that
> > the international meter standard is based on the speed of
> > light (as of the 1980s, I think). Somehow using radar sticks
> > in my mind, but that might just be a holdover from earlier
> > measurement in the 1940s and 1950s.
>
> Would there be any difference in the accuracy of laser vs. radar? I'm not
> enough of an EE geek to know, but thought "no" because they're just
> different wavelengths of the same thing, right?
Not quite. There's a good comparison here
http://www.howstuffworks.com/question396.htm talking about speed radar
versus laser. Basically the laser is more accurate, but requires more
accurate aiming by the operator.
ROSCO
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