Casual discussion amongst spiritual friends.
- Posts: 178
- Joined: Fri Jan 09, 2009 6:25 am
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.
355/113 is a really good approximation (off by less than a millionth) and easy to remember (113355 running up).
- Posts: 369
- Joined: Sat Oct 17, 2009 1:59 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?