Understanding Engineers

Casual discussion amongst spiritual friends.
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fig tree
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Re: Understanding Engineers

Post by fig tree » Sat Feb 20, 2010 8:48 am

RayfieldNeel wrote: Yep, if I'm using pi I'll use either 3.1415 or 22/7, depending on the situation. Plenty of accuracy for an engineer. :smile:
355/113 is a really good approximation (off by less than a millionth) and easy to remember (113355 running up).

Fig Tree

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Re: Understanding Engineers

Post by catmoon » Sat Feb 20, 2010 10:52 am

Once I was sitting outside an ice cream shop and the conversation at our table died. Somehow that evolved into a group determination to empirically evaluate pi with the materials at hand. Well the materials at hand were exceptionally well suited to the task. I had a tape measure in my pocket, we had leftover chalk from making a sundial (well a sun clock of sorts) on the wall, and a bicycle.

I chalked the tire, ran it along the sidewalk, and measured the distance between the two resulting marks. Then I measured the diameter of the tire. Only then did I pull a calculator out of my pocket and take the ratio. To my amazement, the result was 3.142, rounded. I was expecting something between 3 and 3.3 but geez Louise. What is the probability this occurred by chance?

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