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- Xref: sparky comp.programming:3186 sci.physics:19218 sci.math:15222
- Path: sparky!uunet!gatech!mailer.cc.fsu.edu!sun13!ds8.scri.fsu.edu!jac
- From: jac@ds8.scri.fsu.edu (Jim Carr)
- Newsgroups: comp.programming,sci.physics,sci.math
- Subject: Re: area in closed curve; similar to net work calculation
- Message-ID: <11368@sun13.scri.fsu.edu>
- Date: 18 Nov 92 22:12:48 GMT
- References: <BxvtAH.5D0@unix.amherst.edu> <BxxCGI.MsD@news.cso.uiuc.edu>
- Sender: news@sun13.scri.fsu.edu
- Reply-To: jac@ds8.scri.fsu.edu (Jim Carr)
- Followup-To: comp.programming
- Organization: SCRI, Florida State University
- Lines: 23
-
- In article <BxxCGI.MsD@news.cso.uiuc.edu> pkk36438@uxa.cso.uiuc.edu (Polygon) writes:
- >
- > Once a professor showed me an instrument which you can use
- > to trace a closed curve on paper by hand and the meter gives the
- > value of the area. The error is claimed to be within 2%.
-
- It is called a planimeter, if my memory of "old engineer stories" from
- my dad is accurate.
-
- > He also
- > told me that people don't use that any more, so I can't give you
- > any reference on that.
-
- I imagine so. I doubt if they use 10-place log tables either. (One of
- my dad's colleagues _wore out_ more than one book of these per year, so
- he saved money by buying an HP-35 for the original list of $350 back in
- the good old days when mini-computers read punched paper tape.)
-
- --
- J. A. Carr | "The New Frontier of which I
- jac@gw.scri.fsu.edu | speak is not a set of promises
- Florida State University B-186 | -- it is a set of challenges."
- Supercomputer Computations Research Institute | John F. Kennedy (15 July 60)
-