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- Newsgroups: sci.math
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- From: victor@watson.ibm.com (Victor Miller)
- Subject: Re: why is pi irrational
- Sender: news@watson.ibm.com (NNTP News Poster)
- Message-ID: <VICTOR.93Jan21101856@terse.watson.ibm.com>
- In-Reply-To: pete@bignode.equinox.gen.nz's message of 20 Jan 93 20:57:08 +1200
- Date: Thu, 21 Jan 1993 15:18:56 GMT
- Lines: 57
- Reply-To: victor@watson.ibm.com
- Disclaimer: This posting represents the poster's views, not necessarily those of IBM
- References: <1993Jan19.170820.73297@ns1.cc.lehigh.edu> <pete.03vb@bignode.equinox.gen.nz>
- Nntp-Posting-Host: terse.watson.ibm.com
- Organization: IBM, T.J. Watson Research Center
-
- >>>>> On 20 Jan 93 20:57:08 +1200, pete@bignode.equinox.gen.nz (Pete Moore) said:
-
- Pete> Frederick W. Chapman (fc03@ns1.cc.lehigh.edu) wrote:
-
- Frederick >Actually, the Biblical passage merely describes a circular shaped
- Frederick> pool, saying that it was 30 cubits around and 10 cubits
- Frederick> across (if memory serves me). This is a far cry from
- Frederick> saying that "pi = 3", for the following reasons. What the
- Frederick> passage describes are measurements of a man-made object.
- Frederick> The passage does not purport that the pool was in the shape
- Frederick> of a perfect circle (more than likely, it was egg-shaped
- Frederick> :-), nor does it purport that the measurements were taken
- Frederick> with good scientific instruments, nor does it assure us
- Frederick> that the measurements were free of systematic error, nor
- Frederick> does it report the precision to which the measurements were
- Frederick> supposed to be accurate.
-
- Pete> The relevant passage is 1 Kings 7 v 23, if anyone cares.
-
- Pete> The `King James' Bible says:
-
- Pete> "...ten cubits from one brim to the other: it was round all
- Pete> about...and a line of thirty cubits did compass it round about."
-
- Pete> and the `Revised Standard Version' varies only in saying "from brim to
- Pete> brim" and "a line of thirty cubits measured its circumference."
-
- It always helps to go back to the original Hebrew. In the original
- Hebrew, the word for circumference is "Qav", normally spelled qof vav.
- However, in this passage it is spelled qof vav heh. The Vilna Gaon
- (Rabbi Elijah of Vilna -- probably the leading Jewish religious
- scholar of his day -- in the 18th century, and up to the present day)
- was an avid amateur mathematician: One is forbidden to study religious
- subjects while in the outhouse -- so he studied mathematics there. He
- commented that the numerical equivalent of qof vav heh is 111 (the
- standard numerics of the Hebrew alphabet give qof = 100, vav = 6 and
- heh = 5), of of qof vav is 106. If one looks at 3*(111/106) it gives
- pi to four decimal place accuracy! This would certainly seem to be at
- the limit of the technology of measurement of the day (i.e. King
- Solomon's day).
-
- Pete> I don't think there is any doubt that it is describing a circle.
-
- >"pi = 3, to one significant figure" is a correct statement, of course.
-
- Pete> An old joke about "small values of pi and large values of 3"
- Pete> leaps to mind here 8-)
-
- Frederick> So the Bible is accurate, just not very precise. :-)
-
- Pete> When it says the Earth is flat, however, it is inaccurate, rather than
- Pete> imprecise.
- --
- Victor S. Miller
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- Internet: victor@watson.ibm.com
- IBM, TJ Watson Research Center
-