Pi Day 2014

Pi DayAs you may know, it is my firm and unflinching belief that our math & science “holidays” should be scheduled so that they actually teach something about the number being celebrated. Sure, 3.14 is a reasonable estimate of π, and March 14th does represent that number in typical US calendar notation (which has no respect for the hierarchical organization of dates).

But, that says nothing about what π represents. It represents the relationship between the radius (r) of a circle and both its circumference (C=2πr) and area (A=πr2). When it comes to expressing this relationship using dates, I prefer circumference because both the radius and circumference are lengths. Also, expressing the year as a circle makes sense to me (and, based on their mythologies, a large number of human cultures).

If C is 365.25 days and π is π, then 2r is approximately 116 days, which makes r approximately 58 days.

Which is why, at The Finch & Pea, 27 February is Pi Day.

Advertisements

One response to “Pi Day 2014

  1. Pingback: Pi Day: the i and the pi | Galileo's Pendulum

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s