Fifteen years ago, researchers used high speed video to show that when a drop of water coalesces into a layer of the same liquid, it does so not instantaneously but in a matryoshka-like cascade, with each step generating a smaller drop. Now, a newly published study finds that soap bubbles do something similar.
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.
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.
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…
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…
Hint: It's not a brain. Solution below!
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.
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.
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.
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.
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…
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.
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.
Hint: The above video still shows a simulated example of the phenomenon they share.
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!
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?
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.
A snowflake? An ice crystal? Guess again – this photograph is of a liquid, not a solid.