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Topic: fluid dynamics
How to make a self-starting siphon
To move liquid from one container to another, you may need a siphon, a bent tube with one end that's lower than the first. Suction is one way to get the liquid moving through it, but if you don't have a pump and you d...
Float by Susi Sie
Bubbles and droplets of oil in water slowly float around as if in space until... plink! They pop together. Or pop apart? Float is an award-winning 2011 film by Susi Sie with music and sound design by Thomas Schuessler...
Is it impossible to skip a stone 89 times?
"Skipping a stone might seem like a simple thing, but it's actually this beautifully complex mix of skill, athleticism, and fascinating physics." And in what might be one of the more comprehensive stone skipping video...
How do crab spiders use their silk to fly?
Some spiders can catch onto breezes that send them flying across oceans and high up into the skies by ballooning—releasing "numerous strands of silk that they spin up to six feet long." And those threads of silk, ...
A microburst drops heavy rain over Austria’s Lake Millstatt, a time lapse
See a microburst or downburst drop heavy rain in a thunderstorm over Austria's Lake Millstatt. The time lapse was captured by photographer Peter Maier from high above the scenery, allowing a clear view of the burst. F...
The precision and serendipity of Ebru (paper marbling)
Watch ebru artist Alparslan Babaoğlu as he floats bright blue and yellow flowers on the surface of water and then transfers the piece to paper. The Turkish artist spends nine peaceful minutes shaping leaves and petals...
The Very Hungry Maggot: How larva farming can help reduce food waste
How are maggots like waves in an ocean? How are they like puppies? In this fascinating Macroscope video from Science Friday, The Very Hungry Maggot, we meet David Hu, a mechanical engineering professor who's studying ...
Surface tension and The Cheerios Effect
Ever notice how cereal clumps up in your bowl, or how cereal sticks to the edges of the bowl? Bubbles in beverages do the same thing. You've probably seen this surface tension and buoyancy at work, but did you know th...
Demonstrations of the Coanda Effect
Fluids flowing near a surface tend to follow the shape of the surface. Using Schlieren optics, we can see this behavior. It is known as the Coanda Effect and its explanation depends on viscosity, the frictional forces...
Hydrodynamic Levitation
Light balls, disks, and cylinders will levitate on a stream of water in a surprisingly off-center way. In this episode of Veritasium, Derek Muller teams up with Blake from InnoVinci, with some help from aerospace engi...
How Ingenious Animals Have Engineered Air Conditioning
Termites, prairie dogs, and people are all great builders, each in their own way. We all share one crucial problem: Put a bunch of us in a closed space, breathing oxygen in, breathing CO2 out... it doesn't end well. ...
Incredible indoor skydiving flyers at the 2017 Wind Games
A little like ice skating, gymnastics, or modern dance while flying, this indoor skydiving freestyle routine by Poland’s Maja Kuczyńska, performed at the 2017 Wind Games in Catalonia, Spain, is made possible by four h...
Cannon cloud collisions for Art & Inactivism
Two clouds rush toward each other and collide before dissipating in this installation by Mitchell F. Chan. Titled Something Something National Conversation (In 2 Characters Or Less), the crashing forms of water vapor ...
The 3-million-year old Ningwu ice cave never thaws
White stalactites hang down from every surface, and the walls and floors are glazed with thick ice. The Ningwu ice cave, also referred to as Wannian Ice Cave in Ningwu County, China, is a unique phenomenon: The subter...
The physics of ‘skydiving’ wind tunnel acrobats
In a vertical wind tunnel that's blowing air upward at 270 km/h (168 mph), four 'skydiving' acrobats perform a twisting, turning flying routine without ever colliding into each other. How do they perform epic looking ...
How Far Do Sneezes and Vomit Travel? – Gross Science
Let's enter the world of sneeze experiments and vomiting machines with Anna Rothschild as she explains just how far the tiny liquid particles from sneezes and vomit can travel... and it's farther than you think. 'Vomi...
Chemical Bouillon, a series of visually abstract chemical reactions
Hydrocarbon vs Ink - Implosion, above, from the Chemical Bouillon video series, "an artistic project studying the graphic aspect of chemical reactions" created by Antoine Delach, Valere Amirault, and Teurk in Paris, F...
What makes owls so quiet & so deadly for prey? – Deep Look
Get a close up look at the sound-muffling feathers of an owl. Add powerful low-light vision and a nocturnal nature, providing her with the cover of darkness, and the owl becomes a stealthy ambush hunter. From KQED's D...
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