The Reason Trains Have Angled Wheels Is Incredibly Clever

The next time a subway car or commuter train rolls into the station, try to sneak a quick peek at its large metal wheels. Youâ€™ll notice that instead of being perfect cylinders, theyâ€™re actually angled. Itâ€™s a deliberate and clever design choice that allows your train to roll around corners without flying off theâ€¦

This Paper Calculator Adds Via a Series of Tubes

Human beings have always created tools for calculating numbers, from the ancient abacus to todayâ€™s electronic calculators. But hereâ€™s an ingenious calculator drawn on paperâ€”the creation of comic book artist Jason Shiga. And he and the folks at Numberphile have created an explanatory video of how it works.

MathÂ explains the best way to shuffle a deck of cards and why

Everyone who has played poker or even Go Fish knows the basics of shuffling cards. There's the riffle shuffle (combining two halves of a decks and making a bridge), overhand shuffling (quickly splicing cards from the deck back into the deck) and regular ol' mixing all the cards up on a table. Which way is the best?

Turns Out Coin Tosses Are Much Less Random Than You Thought

The latest Numberphile video talks to Stanford professor Persi Diaconis about the randomness of coin tosses. It all depends on how the coin is tossed (height, speed) and how many times it turns over in the air.

Use These Tips And Never Lose At Rock Paper Scissors Again

Your days of never getting shotgun are over, thanks to this new video from Numberphile that breaks down the best strategies for winning at Rock, Paper, Scissors.

Interested In The Math Of Pixar's Animation? This Video Is Must-Watch

Computer animation is one of those delightful intersections of science and art, but when we're cooing over concept art and character designs, it's easy to forget all the math that goes into bringing these movies to life. This video explains the calculations behind the characters.

Here's How to Win Connect Four Every Time

Connect Four might be a game that triggers childhood flashbacks, but it's not simple stuff. In fact, Numberphile reports that there are more than 4 trillion unique ways to fill a standard board. But there's only one way to guarantee a win every time.

Four Infinity Puzzles to Melt Your Monday Mind

It's Monday morning and the work week ahead seems infinite. It's not though, and you should be glad because infinity isn't just long, it's also confusing. Take for instance this quartet of infinite paradoxes that will blow your groggy mind.

Inside the Weird Mathematical Mystery of "0!"

When you're a kid, you learn that you can't divide by zero. But the more you learn, the more you find out there are some interesting nuances around the edges of that rule. Likewise you may remember learning that 0! (zero factorial) is 1. "It just is." But why is it? Numberphile explains.