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High speed camera reveals water-vacuum shockwave! (Patreon)

Published:
2017-01-29 22:26:40
Imported:
2026-06
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Content

So this was just amazing watching the shockwaves in water under vacuum and how they cause the nucleation of bubbles.  Plus its gotta be said that when you have a sunset behind it..... it really does look very beautiful!

The potassium and the lump hammer on th frozen lake was also something I did this week!  Between all of us (about 10) none of us were certain as to if a 6kg hammer would go through the ice.  Thankfully no.... so in a determined attempt to win that 'oh so ellusive' Darwin award, I then tried putting potassium on the end of the hammer. God it makes one hell of a bang!

Sadly, I wanted to take the phantom out to film it, but I couldnt get a mobile power supply in time.  I still managed to get it filmed at 1000 fps with 3 cameras... but not in the same league as the Phantom!  Ive not been through all the footage yet, but Im hoping its good enough to make into a video! :-)



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High speed camera reveals water-vacuum shockwave!

So I've been putting the new high speed camera through its paces.... For a long time I've enjoyed tormenting students with water in a vacuum tube. It makes a chinking sound... but why? Now for me.... you gotta bear in mind Ive been working with vacuums for over 20 years.....

Comments

Anonymous

One thing you didn't (directly) mention was one of the reasons why the bubbles spawn as you move the glass vile. That is the negative pressure that builds up as you accelerate the vile, reducing the required vapor pressure for the formation of bubbles. As opposed to a pressurized environment, in the sealed system the negative pressure only as has to exceed the pressure created by the height of the water column, and the attraction force of the water to itself. But if the accelerating force is great enough a similar effect should be observable, even under atmospheric pressure. What might be interesting is, if the effect of water vapor being compressed, and thus increasing the vapor pressure or the negative pressure created by the movement itself has more influence on the formation of bubbles. Great Video as always btw :)

Anonymous

You think this work would be worth anything to pump manufacturers?

Anonymous

What's the song in the slow mo video?

Anonymous

Hi ThunderousF00terus! I'm a huge fan, (in the pants ;)) I was thinking about your latest science videos and their majestic beauty and I was wondering... Could you put together a video purely of beautiful science visuals? I've got some nerdy friends who know how to party and using your experiments as a back drop to some psytrance or even metal would be sure to blow their brains open like the big bang! Just an idea, I'd feel like a special little me if you did and be eternally grateful that such a mad scientist like yourself took any notice of the electrical activity in my brain! Take care and spaghetti monster bless!