Espresso in Slow-Mo

Espresso has some pretty cool physics. But it’s also just lovely to watch in slow motion. This video offers a look at the making of an espresso shot at 120 frames per second (though you can also enjoy a 1000 fps version here). Watching the film form, expand, and break up at the beginning and end of the video is my favorite, but watching how the occasional solid coffee grains make their way into and down the central jet is really interesting also. (Video and image credit: YouTube/skunkay; via Open Culture)

#espresso #flowVisualization #fluidDynamics #fluidsAsArt #highSpeedVideo #physics #science #surfaceTension

Ever seen a 🐝 bump into another 🐝 to tell it to move along? Filmed at 500 frames/second 🧪

#EastCoastKin #science #insects #flight #highspeedvideo

Ever seen a 🐝 bump into another 🐝 to tell it to move along? Filmed at 500 frames/second 🧪

#EastCoastKin #science #insects #flight #highspeedvideo

About an hour ago, YouTuber AlphaPhoenix may have changed the history of cameras with his garage experiment. And reinvented lightspeed nanosecond #highspeed #slowmotion video technology to under 1% cost.

By mapping a rotating lens connected to an oscilloscope measuring laser reflections — over and over again — he’s kind of doing a reverse #Matrix “bullet time” to create a billion-frames-per-second image … he’s mapped the oscilloscope x-axis to the time dimension and synchronised it with a pulsing laser.

https://youtu.be/IaXdSGkh8Ww

#photography #highspeedphotography #highspeedvideo #highspeedvideography #slowmo #slowmotionvideo

👀 New study reveals the explosive secret of the squirting cucumber

https://www.pnas.org/doi/10.1073/pnas.2410420121
https://www.ox.ac.uk/news/2024-11-26-new-study-reveals-explosive-secret-squirting-cucumber

Seed ejection filmed at 8600 frames per second with a high-speed camera, that remained aimed at the fruit for several days, using an image-based auto-trigger set up.

#Biology #Science #Biomechanics #Locomotion #PlantScience #PlantAnatomy #Seeds #Plants #MathematicalBiology #Cucumber #video #highspeedvideo #STEM

Researchers in Scotland develop “affordable” high speed HD camera tech that shoots millions of frames per second

#news #heriotwatt #highspeedvideo #slowmotion

Supersonic Baseball Hitting a Gallon of Mayo Is Great Flow Visualization

Those of us who enjoy seeing mechanical carnage have been blessed by the rise of video sharing services and high speed cameras. Oftentimes, these slow motion videos are heavy on destruction and light on science. However, this video from [Smarter Every Day] is worth watching, purely for the fluid mechanics at play when a supersonic baseball hits a 1-gallon jar of mayo.

The experiment uses the baseball cannon that [Destin] of [Smarter Every Day] built last year. Ostensibly, the broader aim of the video is to characterize the baseball cannon's performance. Shots are fired with varying pressures applied to the air tank and vacuum levels applied to the barrel, and the data charted.

However, the real glory starts 18:25 into the video, where a baseball is fired into the gigantic jar of mayo. The jar is vaporized in an instant from the sheer power of the collision, with the mayo becoming a potent-smelling aerosol in a flash.

Amazingly, the slow-motion camera reveals all manner of interesting phenomena. There's a flash of flame as the ball hits the jar, suggesting compression ignition happened at impact with the jar's label. A shadow from the shockwave ahead of the ball can be seen in the video, and particles in the cloud of mayo can be seen changing direction as the trailing shock catches up.

The slow-motion footage deserves to be shown in flow-visualization classes, not only because it's awesome, but because it's a great demonstration of supersonic flow phenomena. Video after the break.

#science #aircannon #baseball #baseballs #highspeedvideo #slomo #slowmo #slowmotion

See-Through Carburetor Gives A Clear Demonstration

Carburetors have been largely phased out on most automobiles, but for a century they were the standard, and still are on many smaller engines. Armed with a high-speed camera and with the help of his father, [Smarter Every Day] investigates these devices by experimenting with a DIY see-through carburetor connected to a real engine.

The purpose of a carburetor is to mix gasoline and oxygen to the correct ratio for combustion inside the engine. Gasoline flow from the tank to the bowl, from where gets sucked into the venturi. The choke valve adjusts the amount of air entering the carb, while the throttle controls the amount of air-fuel mixture entering the engine. It appears that the carburetor was made from a resin 3D printed body and manifold, with an acrylic cover and PLA throttle and choke valves. It was attached to a single-cylinder engine.

The high-speed footage is incredible, and clearly shows the operation of the carburetor and makes it incredibly easy to understand. If you're interested, he also uploaded a second video with almost 80 minutes of detailed footage.

[Smarter Every Day]'s infectious curiosity has led to numerous fascinating projects, including a supersonic baseball canon and the backward bicycle.

#enginehacks #3dprinting #carburetor #highspeedvideo #smartereveryday