Few Things Are As Captivating As Ink Billowing Through Water In Slow-Mo

The Slow Mo Guys squirted various colors of ink into a big tank of water and shot it on white seamless with a phantom 4K camera. The resulting footage, played back in suuuuuper slllllowwww moooootion, is utterly entrancing. » 3/02/15 4:25pm 3/02/15 4:25pm

How many licks does it take to get to the center of a Tootsie Pop? According to Jinzi Huang, co-author of a recently published study that examines how "hard candy bodies dissolve in laminar high-speed water flows," approximately 2,500. » 2/11/15 7:00pm 2/11/15 7:00pm

High-Speed Video Reveals The Source Of That Incredible After-Rain Smell

That smell has a name. It's called petrichor. For decades, scientists have speculated on where this smell comes from, but the mechanism behind the phenomenon has remained elusive. Now, researchers at MIT studying high-speed video of raindrops think they've found the answer: The smell is released in tiny aerosol clouds… » 1/15/15 5:30pm 1/15/15 5:30pm

There Is "Epic Movement" In A Water Drop

Directed and animated by artist Sharon Liu, Geronimo! is a whimsical, watercolor-illustrated reminder of the "epic movement we miss in every drop" of water. If you're familiar with the fluid mechanics of water droplets, you'll understand the reference; if you're not, it's high time you learned about coalescence… » 10/30/14 4:30pm 10/30/14 4:30pm

The Science Of Amber Waves Of Grain

Scientists have actually studied the fluid dynamics of rippling waves of wheat – like the ones referenced in the second line of "America the Beautiful " – with experiments like the one above, in which nylon filaments imitate tall stalks of grass and soap solution the air flowing over them. » 7/03/14 9:30am 7/03/14 9:30am

Your New Desktop Background: Supersonic Wind Tunnel Edition

Three men (look closely) stand inside Arnold Engineering Development Complex's 16-foot supersonic wind tunnel facility. The tunnel, seen here in 1960, is housed at Arnold Air Force Base, Tennessee, but is now inactive. » 6/08/14 5:00pm 6/08/14 5:00pm

Your Afternoon Catharsis: Liquid Droplets Coalescing in Slow Motion

You've probably seen two beads of liquid coalesce hundreds of times in your life. Maybe thousands. But we're willing to bet you've never seen them do it in slow motion. » 4/04/14 3:34pm 4/04/14 3:34pm

Behold the absolute mind-bogglery of a knuckleball in flight

MLB pitcher R.A. Dickey* slings an erratic knuckleball pitch, posing a challenge for batter and catcher alike. The ball has been colorized to highlight its almost total lack of spin, which usually serves to stabilize the ball's trajectory. » 1/04/14 1:00pm 1/04/14 1:00pm

Add this to the ever-growing list of reasons ants are incredible

This video from The New York Times on the physics of fire ants is absolutely captivating. Who knew large numbers of ants could ooze, sludge-like, from a funnel, or spring back, rubber-like, when subjected to compressive forces? » 12/27/13 12:50pm 12/27/13 12:50pm

Tomorrow's wind turbines could look like enormous owl wings

Engineers often take inspiration from animal designs because they're more efficient than machines are. In the case of owl wings, nature has a major advantage over human engineering: owl wings are uncannily quiet. Now, researchers are considering outfitting wind turbines with an upscaled equivalent – if they can figure… » 11/25/13 12:05pm 11/25/13 12:05pm

Your guide to one of the coolest physics demonstrations of all time

In this simple demonstration, we see what seems like a special effect. But it's not. Here's how laminar flow makes reality look like an optical illusion. » 10/09/13 2:04pm 10/09/13 2:04pm

This number proves that nothing in the world is solid

One branch of science, rheology, has invented a dimensionless number. It's called the Deborah Number, and it is meant to quantify the motto of the science: "Everything flows." Put another way, everything in the world has liquid properties. Even mountains. » 10/03/13 9:40am 10/03/13 9:40am

Fuck Yeah Fluid Dynamics has an awesome roundup of fluids research that's been recognized with an Ig Nobel Prize. Past winners include a study on why coffee spills when you walk, and another on pressures involved in penguin defecation. Check out the full list at FYFD! » 9/20/13 2:20pm 9/20/13 2:20pm

After 69 years, Earth's slowest-moving drop has been captured on video

You guys. YOU GUYS. HOLY CRAP YOU GUYS IT FINALLY HAPPENED. After decades of observation, the climax of one of the longest running experiments in history has finally been captured on video. The pitch! It has dropped! » 7/19/13 6:20am 7/19/13 6:20am

What the hell is going on with these balls?

Two glass spheres are dropped into a pool of resting water. The sphere on the left causes almost no splash at all, while the one on the right looks like it's doing an impression of your cousin Joey pulling a cannonball at the community pool. The balls are the same size, shape and material. What gives? » 7/10/13 2:49pm 7/10/13 2:49pm

We could watch this bouncing water droplet all. Day. Long.

And now you can, too! FYFD explains the physics behind this mesmerizing clip, which comes by way of Kahp-Yang Suh of Seoul National university in South Korea. » 6/04/13 4:30pm 6/04/13 4:30pm

A simple but elegant demonstration of fluid density

Really loving this demonstration of fluid density from Victoria, Canada's School-Based Weather Station Network. It's incredibly simple, but surprisingly effective. Every grade school on Earth should have this setup. » 4/22/13 9:15am 4/22/13 9:15am