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Math911 articles archived since 1845

What Are Mixed Fractions?

How do they work? And how can you turn them into improper fractions? Keep on reading to find out!

July 8, 2017 — Math Dude Jason Marshall

4 More FAQs about Percentages

How do you quickly calculate 25 percent of a number? Or 33 percent of a number? And how can you quickly calculate percentage increases?

June 28, 2017 — Math Dude Jason Marshall

Keep Rolling Luggage Upright with Physics

A team of physicists has revealed why rolling suitcases start rocking from wheel to wheel—and how to avoid that frustrating phenomenon. Christopher Intagliata reports.

June 21, 2017 — Christopher Intagliata

How to Use Math to Fly Rockets to Space

What does it really mean for a satellite to orbit the Earth? What’s the math behind it? And what’s the math behind the rockets that get those satellites into orbit? Keep on reading to find out!

June 7, 2017 — Math Dude Jason Marshall

Is There a Link between Music and Math?

Nadine Gaab, an associate professor of pediatrics at Boston Children’s Hospital and Harvard Medical School, and Jennifer Zuk, a doctoral student at Harvard University, answer: 

May 1, 2017 — Nadine Gaab and Jennifer Zuk

The Sneaky Danger of Space Dust

When tiny particles of space debris slam into satellites, the collision could cause the emission of hardware-frying radiation. Christopher Intagliata reports. 

May 11, 2017 — Christopher Intagliata

Shoelace Study Untangles a Knotty Problem

Researchers have trotted out data that show a combination of whipping and stomping forces is what causes laces to unravel without warning. Karen Hopkin reports.

April 12, 2017 — Karen Hopkin

Wavelet Theory Nets Top Mathematics Award

Yves Meyer wins the Abel Prize for development of a theory with applications ranging from watching movies to detecting gravitational waves

March 21, 2017 — Davide Castelvecchi and Nature

Human Body Ratios

A project that measures up

March 16, 2017 — Science Buddies and Sabine de Brabandere

New Number Systems Seek Their Lost Primes

For centuries mathematicians tried to solve problems by adding new values to the usual numbers. Now they’re investigating the unintended consequences of that tinkering

March 15, 2017 — Kevin Hartnett and Quanta Magazine

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