PI
PI

# There's a Hidden Connection Between Pi and Quantum Mechanics

Physicists have uncovered a hidden connection between a famous 350-year-old mathematical formula for pi, everyone’s

# Someone Made a Video of The Count Counting Pi to 10,000 Decimal Places

Here's a weird little corner of the internet for you to devour. YouTube user Crysknife007 is well-known for hours-long

# How to Calculate Pi with a Shotgun

We all know pi, at least the first three digits of it. If for some reason you forgot them though, there's good news.

# Why Pi is a stupid number and people are dumb to celebrate it

Recreational mathemusician Victoria Hart—aka Vi Hart—gives overwhelming (and fun!) evidence that clearly demonstrates

# Space-Pi!

Pi is for planets, and spacecraft, for orbital dynamics and craters. It's 3.14, and it's all about circles.

# When it comes to calculating pi, two wrongs might make a right

A great deal of time has been spent working out the facts about pi. At one point, the "facts" were wrong. And a

# You've Never Seen Pi Look So Interesting in So Many Ways

Martin Krzywinski is an artist. No, wait, he's a mathematician. Actually, scratch that: he's both, and he can make the

# Why don't the Simpsons live in a base 8 world?

The latest episode of Numberphile delves into a particularly interesting reference to pi from the Simpsons episode "Mar

# Experience the number π as you never have before

Unless, that is, you're a synesthete. (You're about to experience a number through music!)

# Will you be having a pi party?

Do you feel like having a once-every-thousand-year party? You only have a couple of years to set it up. Some of us will

# 7 Numbers That Are Just as Cool as Pi

We may be celebrating Pi Day here at io9, but we would be irrational to deny that there’s more to mathematical

# Pi Was Almost 3.2

When an amateur mathematician from Indiana managed to solve one of mathematics' great problems—squaring the circle—he

# How Many Digits of Pi Do You Really Need?

Pi is famously calculated to trillions of digits—but how many of them do we really, really need? This video

# Wash Your Scotch Down With a Heaping Helping of Pi

How many numbers of Pi can you rattle off? Probably not many. Probably even fewer if you're drunk. But you can at

# Artist Skywrites the First Thousand Digits of Pi over San Francisco

Any eyes in San Francisco that weren't focused on Apple's announcements yesterday might have noticed something peculiar

# The first 4,000,000 digits of Pi, visualized in a single image

Pi is what's known as an irrational number, which means that its decimal representation is both infinite and

# Who says you can't use maths in your daily life?

Pro-tip on pi-tips: this will come off as even more clever if you actually ordered pie. Or a pi pie.

# If You Read Pi Long Enough, You'll Find Hamlet

It's Pi Day! Which, okay, whatever, if you were really hardcore about celebrating you'd figure out what nanosecond

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