Re: [Phys-L] SciAM goof

[John Clement <clement@HAL-PC.ORG>]

This is not my reference.  I just quoted the free available info from the
journal website, but I do not have access to the original article.

John M. Clement
Houston, TX

> Curious, your reference is to toughness where J is appropriate instead
> of strength where N is more appropriate (should be P).  So combining
> they got J force!  The xptle description is a force xpt (actually
> tensile? and should be N/m^2?)   Until I read the article, after a kind
> sole sent me an unbroken link, I thought they might be doing a charpy,
> etc. test.  Note they even mentioned notch (not).
>
> bc, amateur engineer
>
> John Clement wrote:
>
> > And forces do not propagate.
> >
> > They should have egg on their faces.  I have been unable to locate the
> > original article in Nature Materials, so perhaps this is a spoof
> perpetrated
> > on the journal?
> >
> > According to a search the original article is:
> > > From brittle to ductile fracture of bone
> > Herwig Peterlik, Paul Roschger, Klaus Klaushofer, Peter Fratzl
> > SUMMARY: Toughness is crucial to the structural function of bone.
> Usually,
> > the toughness of a material is not just determined by its composition,
> but
> > by
> > CONTEXT: ...for example, polymers such as in wood, polymer-ceramic
> particle
> > composites such as in bone, structures consisting almost entirely of
> mineral
> > in many sea shells such as that...
> > Nature Materials (11 Dec 2005) Letters
> >
> > However the article is not listed on the cover page for the journal.  I
> do
> > not have access to this journal so I can not comment on the original
> > article.  Does anyone else have access.
> > URL:  http://www.nature.com/nmat/index.html
> >
> > Article URL:
> > <http://www.nature.com/nmat/journal/vaop/ncurrent/full/nmat1545.html>
> >
> > John M. Clement
> > Houston, TX
> >
> >
> > > Subject: Re: [Phys-L] SciAM goof
> > >
> > > Very tasty.  I'd like to know more about bone strength and breaking
> > > properties for my students' "karate physics day" in mechanics, but
> > > who can trust a popularized excerpt presenting gibberish like this?
> > >
> > > Dan M
> > >
> > > Dan MacIsaac, Associate Professor of Physics, SUNY-Buffalo State College
> > > 222SciBldg BSC, 1300 Elmwood Ave, Buffalo NY 14222 USA 716-878-3802
> > > <macisadl@buffalostate.edu>  <http://PhysicsEd.BuffaloState.edu>
> > >
> > > On Dec 14, 2005, at 8:22 PM, Scott Goelzer wrote:
> > >
> > >
> > > > "the researchers found that it took only 375 Joules of force"
> > > >
> > > > <http://www.sciam.com/article.cfm?
> > > > chanID=sa003&articleID=0003B7E8-0127-139A-812783414B7F0000>
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > *******************************************
> > > > Scott Goelzer
> > > > Physics Teacher
> > > > Coe-Brown Northwood Academy
> > > > Northwood NH 03261
> > > > sgoelzer@coebrownacademy.com
> > > > *******************************************
> > > > _______________________________________________
> > > > Phys-L mailing list
> > > > Phys-L@electron.physics.buffalo.edu
> > > > https://www.physics.buffalo.edu/mailman/listinfo/phys-l
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