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From: | M Watts |
Subject: | Re: Bass clarinet fingering chart |
Date: | Thu, 09 Jul 2009 09:17:13 +1000 |
User-agent: | Thunderbird 2.0.0.18 (X11/20081105) |
[Off topic] Mike Solomon wrote:
1) The Bible makes no such claim. 1 Kings 7:23 apparently describes a temple object with a circumference of 10 and a diameter of 30. It's perfectly correct to state measurements only to the number of significant figures necessary for the application in question, in this case description of the temple. As maths people know, `10' is accurate to two significant figures for any value from 9.5 to 10.5; `30' for any value from 29.5 to 30.5.5) I read that the biblical definition of pi is 3 (1 Kings 7:23).
An implied rounding of pi to 3 introduces a margin of 4.7% error (because 0.14/3 = 4.7%); we all accept greater inaccuracies in everyday life without any drama.
2) Or, if you insist that biblical authors were too stupid to round off figures, take a closer look at the text -- the vessel's brim flared outwards (v. 26); the `10' measures from brim to brim (v. 23). The `30' refers to the outer diameter of the main part of the vessel (below the the flared brim), measured with a taut string line.
In guile, (angle -1) returns pi accurate to 14 decimal places.
Good for guile; but any decimal expression of pi remains an approximation.
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