[sotd] October 4, 2004 [Evolution and Analysis of the Toothbrush]
- From: "The Site of the Day" <sotd@xxxxxxxxxxxxxx>
- To: sotd@xxxxxxxxxxxxx
- Date: Mon, 04 Oct 2004 08:18:49 -0300
Site of the Day for Monday, October 4, 2004
Evolution and Analysis of the Toothbrush
Today's site demonstrates just one of the things those mechanical engineers
delve into on their way to an engineering degree. Gentle Subscribers will
discover an instructive overview of the humble toothbrush on this single
web page from "Mechanical Advantage", a journal from the American Society
of Mechanical Engineers .
"The ... article on the evolution and analysis of the toothbrush was
written by Kyle Sembera, a mechanical engineering senior at Lamar
University, Beaumont, Tex., as a final assignment for an elective design
class. Sembera=92s toothy research project was inspired by course professor
P.R. Corder who, during a recent visit to the dentist, found himself musing
on the merits of modern toothbrush design." - from the website
The page presents a history on the origin of the toothbrush, dating back to
the Egyptian toothstick. Naturally, there are diagrams of the classic
toothbrush design and the modern toothbrush with its larger cross section
and reinforced and angled handle. Additional technical diagrams illustrate
the stress forces on each type.
Whisk over to the site for a nice little exposition on the toothbrush at:
http://www.asme.org/mechanicaladvantage/March2001/toothbrush.html
If the above URL wraps in your e-mail client, enter it all on one line in
your browser or use this TinyURL:
http://tinyurl.com/5qvka
A.M. Holm
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