[sotd] April 1, 2004 [Atomic Clocks]
- From: "The Site of the Day" <sotd@xxxxxxxxxxxxxx>
- To: sotd@xxxxxxxxxxxxx
- Date: Thu, 01 Apr 2004 09:45:20 -0400
Site of the Day for Thursday, April 1, 2004
Atomic Clocks
Today's site from the Science Museum in Great Britain provides an
interesting account of the development of the atomic clock. Gentle
Subscribers who enjoy a look at things which are now taken for granted but
which were a major step along the scientific road of the twentieth century
will find an excellent presentation on this particular aspect of technical
progress.
"The time by which we all live is now maintained by incredibly accurate
atomic clocks. Find out how they work, why we need their accuracy and how
they may become even better in the future." - from the website
The site offers information on topics ranging from the history of
electrical timekeeping to how atomic clocks work and the reasons for their
development. Clarifying diagrams highlight the principles of their design.
Fascinating bits of clock trivia, such as atomic clock accuracy -- to
within one second over 6 million years -- and the new, surprising
definition of a meter, are also included. Additional sections deal with
future atomic clocks and the uses of atomic timing, especially its role in
the Global Positioning System.
Leap over to the site for an informative presentation on atomic clocks at:
http://www.sciencemuseum.org.uk/on-line/atomclocks/index.asp
A.M. Holm
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