Re: [Phys-l] gravitational force

[jbellina <jbellina@saintmarys.edu>]

I stand corrected...another physics textbook myth bites the dust.

joe

Joseph J. Bellina, Jr. Ph.D.
Professor of Physics
Saint Mary's College
Notre Dame, IN 46556

On Nov 1, 2006, at 2:27 AM, Bernard Cleyet wrote:

> For about 20 years the intermediate and advanced labs. at UCSC were
> largely based on the famous basic experiments, e.g. oil drop, Fizeau -
> Foucault speed of light, Cavendish, etc.  We kept a file of the  
> original
> papers and the students were expected to read them.  They are 40 miles
> away, so I suggest one take advantage of JB's cross posting and check
> for ones self:
>
>
> http://www.journals.royalsoc.ac.uk/(dr5ece551054aw45zsveyx55)/app/ 
> home/main.asp?referrer=default
> <http://www.journals.royalsoc.ac.uk/%28dr5ece551054aw45zsveyx55%29/ 
> app/home/main.asp?referrer=default>
>
>
>  Philosophical Transactions of the Royal Society of London, v. 88,
> (1798) p. 469-474.
>
>
> bc
>
>
> p.s. to make it easier for youall:
>
>
> http://www.journals.royalsoc.ac.uk/(dr5ece551054aw45zsveyx55)/app/ 
> home/issue.asp?referrer=parent&backto=journal, 
> 90,112;linkingpublicationresults,1:120135,1
> <http://www.journals.royalsoc.ac.uk/%28dr5ece551054aw45zsveyx55%29/ 
> app/home/issue.asp?referrer=parent&backto=journal, 
> 90,112;linkingpublicationresults,1:120135,1>
>
>
> p.p.s As written by John Stong, JB's recollection isn't quite it.  --
> Cavendish was confirming Newton's estimate of the earth's density.
>
> jbellina wrote:
>
> > As I recall, Weighing the Earth was the title of the paper he wrote
> > about his experiment.
> >
> > Joseph J. Bellina, Jr. Ph.D.
> > Professor of Physics
> > Saint Mary's College
> > Notre Dame, IN 46556
> >
> > On Oct 31, 2006, at 10:38 PM, carmelo@pacific.net.sg wrote:
> >
> >
> >
> > > Mike VanAntwerp wrote:
> > >
> > >
> > > > Does anyone have any lab activities or advice on teaching a unit on
> > > > this? I'd appreciate any help with this.
> > > You may want to check these websites:
> > > http://www.hep.fsu.edu/~wahl/phy3802/expinfo/cavendish.html
> > >
> > > Cavendish's Experiment was designed to determine the Density of the
> > > Earth, though some called it "Weighing the Earth".
> > >
> > > Alphonsus
> > >
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