The phys.org article and headlines are misleading, the authors did not investigate systems to actually transmit torque. From what I gather, the interesting findings are the parameters for co-rotation and counterrotation of the driving and driven cylinder, depending on the Reynolds number, distance and so on. To illustrate one of the images of their publication: https://i.imgur.com/m8P2iVw.png

But these things exist though. https://en.wikipedia.org/wiki/Fluid_coupling

That would make much more sense then what the article seems to imply (scientists reinvent a 100 year old torque converter! But worse!!). Of course that headline isn't nearly as fun (scientists develop better model for fluid dynamics in torque converter).

Can someone suggest a better (i.e. more accurate and neutral) title?

Mapping out How Fluid Mechanical Spin-coupling Interactions Depend on Proximity, Confinement, and Flow State

Alternate: New Ways to Understand, Control, and Exploit Hydrodynamic Spin-spin Interactions in Applications

The article doesn't really deliver on either headline, but that's the fault of the article, not the study.

The limit is 80 chars and I'm not sure how to squeeze those in. I've taken a crack at something simpler in the title above. Does it work?

From the original source: Scientists Put Teeth Into Water-Driven Gears https://www.nyu.edu/about/news-publications/news/2026/januar...

(Can't tell what the submission title was, but the byline (with quotes) works too: “Fluid gears” invention offers promise for improving mechanical devices)

Ok, let's try the second one. Thanks!

Oh nice, that is a neat trick! One small nitpick (that makes no difference): The side lengths of the ISO Ax formats are rounded to the next mm, so actually the A0-format has an area of 0.999949m^2

Not to the next, to the nearest, otherwise it would have to be slightly larger than 1m^2.

I always enjoyed the "one-stop" solution with conda/mamba that installed the right version of cudatoolkit along with pytorch. How do you handle that without conda? (I'm genuinely ask because I never had to actually care about it.) If I manually install it, it looks like it is going to be a mess if I have to juggle multiple versions.