Re: [SACC-L] The real poop ...
- Well, Luckenbach obviously never measured the stuff directly; just took
an estimate from someone else.
This same thing happened in our A&P text, where the author wrote that
the skin is 15% of body weight. Students thought that was amazing; how
did he get that? So, I did a quick calculation ... use a nomogram that
estimates surface area from height and weight; apply an average of 2mm
thickness, so we can measure the volume; then the density of skin on
average is 1.07g/cc and so we get ... 5.1%!!!
So, back and forth, and finally an email to the author who admits to
reading it somewhere and thinking it would make a nice lead-in to the
chapter. At least agreed to research it and change it for the next edition.
Talk about a teachable moment.
On 2013-02-24 21:46, Bob Muckle wrote:
> Wow, that is impressive research on feces.
> The rumor of several pounds per day per person started with my most recent column for 'Anthropology News'. The source is a document a university professor wrote for his students on the nature of faeces. http://www.soe.uoguelph.ca/webfiles/wjames/homepage/teaching/wjfecalmatters.html I don't know, but presume, it was for a course in biochemistry or something like that.
Andrew J Petto, PhD
Department of Biological Sciences
University of Wisconsin -- Milwaukee
PO Box 413
Milwaukee WI 53201-0413
CapTel Line: 1-877-243-2823
Could you be a teacher?
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