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The Liquid Hammer Toy You Can't Buy

4M views · Jan 23, 2026 · Science & Technology

Steve Mould

3.6M subscribers

Comments · 3.8K

@SteveMould · 8 months ago · pinned
My producer put neat cordial in the wine glasses. Which I think, on ballance, was a worse experience than wine would have been. The sponsor is KiwiCo: Click <a href="https://www.kiwico.com/stevemould">https://www.kiwico.com/stevemould</a> to get 50% off your first monthly crate.
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@Jam_Cubing · 8 months ago
A full spectrum camera sounds like a camera I'd use to take a photo of my friend group
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@xxPYROxxJONESxx · 8 months ago
Never realised Steve had so much game
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@chthonictonic · 6 months ago
Wouldn't it have just been easier to buy a mantis shrimp?
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@simonnading · 8 months ago (edited)
That is a heck of an opening 😂 Editting to add a couple things: liquids in a vacuum are always neat to learn about, and I just learned how the British pronounce Xenon. Also, I know lights that use noble gasses have a coating to move more of the energy to the visible spectrum, so I am wondering what would happen if you gave a water hammer that coating.
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@ajbaume1949 · 8 months ago
“What if the glass was literally half empty?” -Xkcd
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@yourguard4 · 8 months ago
Btw: "Bremsstrahlung" is german, and basically means "radiation by deceleration".
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@xitzy · 8 months ago
<a href="https://www.youtube.com/watch?v=RWbCC6f_k1c&t=76">1:16</a> “Can I please have some water?” “Strict or casual?”
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@VindictiveBathToaster · 8 months ago (edited)
<a href="https://www.youtube.com/watch?v=RWbCC6f_k1c&t=230">3:50</a> As a plumber, we know that water doesn't compress and when you turn a faucet off, there's a sudden shock of the moving water coming to a stop. This water hammer effect can have the same effect on copper water pipes as an actual hammer over time, causing the pipe to fatigue and eventually break, causing an expensive accident that can flood and destroy a house. To prevent this, when installing the pipes in the house, at a few locations such as a bathroom or kitchen get a little extra pipe. A T-junction is installed and a 1-foot (30cm) piece of capped pipe left sticking straight up. Since it's capped, air is trapped inside and gravity keeps the water below it, even when under pressure. This creates a kind of shock absorber, like on your car. When the water valve is suddenly closed, this little shock absorber gives the water someplace to go and since air does compress, it serves to slow the water down allowing it to come to a more gradual stop instead of coming to a sudden stop with no place to go, slamming into the fittings and pipe walls, eventually weakening and breaking them. The industry calls them Water Hammer Arresters and they can be purchased to screw into existing plumbing, but when building a new home, we simply install them using a normal piece of copper pipe the rest of the water supply pipes are made of. It's very important that if you hear that bang when you trun off a faicet in your home, you should consult a plumber to install one or two water hammer arresters to protect your pipes from costly damage.
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@WhatIsATurtle · 5 months ago
Replace the glass with fused quartz if you want higher ultra violet transparency it should expand the range down to around 180nm
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@chazhendricks4478 · 8 months ago
Hey Steve, we use cavitation bubbles during cardiac catheterization to crack calcium that blocks the coronary arteries. It's a device called a Shockwave. Would be awesome to see a video from you about them.
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@A-Aron191 · 8 months ago (edited)
I would give the casual water hammer to people and gaslight them into thinking their technique was bad while I shake the strict water
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