Week of Pi, Day 1: What Is Pi?
Pi Day is this week, so let's celebrate with a weeklong series on the famous number.
Here is a very brief background on pi:
- Pi is a constant that describes the ratio of a circle's circumference to its diameter. For all circles, that ratio is a constant.
- Pi is not just irrational (when written as a decimal, its digits never end and never hit a never-ending repeating pattern), but it's also transcendental (never mind what that means, but it's pretty special and has nothing to do with Ralph Waldo Emerson or Henry David Thoreau).
- Pi comes up in a ton of mathematical formulas. Honestly, it's pretty startling how often it comes up.
For more detail, check out Scientific American's "What is pi, and how did it originate?"
The Story of Pi video below has some good animations and explanations.
Check back tomorrow for more Pi Week fun!