I’d say perfluorocarbons, like perfluorodecalin. Harmless and clear, but they have huge oxygen absorption capacity, so you’d surely be able to breathe even if you sank your face in it (probably not fun to do so tho).

If a fascist party ever takes control of my country, I’ll be in a different country by then.

When you hit your elbow, you can hit the ulnar nerve. This nerve, among other things, carries tactile information from the pinky and usually part of the ring finger, so hitting it causes an unpleasant sensation in that area.

8% coding DNA? Wow, that’s quite a jump from the 2% coding and 5-10% conserved DNA that used to be cited. Full-genome sequencing has truly (metaphorically and literally) filled many gaps in the study of our genome…

95% of our DNA is basically useless gibberish. Since the evolutionary incentive to shorten it is so small in our case, all sorts of processes “hijack” it to propagate themselves without giving anything back.

It likely does, at some point within the ellipsis.

So, uranium?

I use either the default GUI text editor from each distro or Vim with stock configuration. I must say it does take surprisingly little to get up to speed with Vim, but I still struggle with specific things like moving code across files.

I haven’t changed any keybindings in firefox, but heard qutebrowser is nice for such use case.

What about using commas? “The monkey who, I’m wondering, can see my ears”.

As useless as this AI nonsense seems to me, I do argue that it doesn’t violate copyright. For all purposes, looking at examples of something to do it yourself afterwards is not a derivative work. People who made those licenses probably did not foresee that we’d be able to automate that process, or store and copy that knowledge arbitrarily, or sell it, so it’s still a shitty situation…

Losing weight and not sleeping face up may help in any case.

If you usually feel tired or sleepy during the day, it could be sleep apnea, which can have long term negative effects on your health. In that case, see a doctor, who will usually perform tests while you sleep and then may prescribe CPAP. If that doesn’t work or you find it too uncomfortable and the apnea is severe, you may be offered surgery.

There are some commercial devices that might help. Nasal strips are an option if you suspect your nasal passages could be compromised (deviated nasal septum). Chin straps and other devices that position your jaw do help in some cases wherein the issue is in your throat, especially when combined with CPAP.

Edit: also, don’t take medical advice from people on the internet ;)

As other commenters point out, not since the extinctionof Neanderthals, Denisovans, etc. But even if it were possible, the hybrid would not be fertile: our chromosome 2 is a fusion of two chromosomes that are separate in other related species, so there’s no way meiotic crossover recombination could possibly work.

DNA contains coding and control regions. Changes to the coding regions are rare, most of the evolutionary stuff is happening within those control regions instead. Mutations there are more likely to result in interesting effects by affecting the way genes activate and interact, while the coding regions do the heavy lifting.

Losing some feature could be as simple as a mutation that permanently switches off the control region of a gene, even if the gene itself and the interactions formerly coded around it still work. Over time, those accumulate mutations and degrade, since they are not useful and therefore evolution doesn’t preserve them, but they are still there. For example, we have an inactivated gene that used to make an enzyme that would break down uric acid. So we get gout, but our ancestors didn’t.

Underrated comment.

The atmosphere is just about 10 kg/m^2 in sectional density; the manhole cover was very likely higher than that, wouldn’t that mean the cover’s mass should have come out at the other side, intact or not?

I’m a beta-lactam antibiotic.

Good for many tasks, but rapidly becoming useless.

I mainly use it to get a general direction/names/sources when I want to learn about someting but don’t know where to start. So far it’s the only use case for which I’ve found it reliably useful.

It starts out as a tube and folds into its final shape, but I’m suprised it can be reversed, holy crap…

I fully intend to go on with the project! Right now it’s not good enough to be interesting, but the results so far are too promising to not give it a chance.

Thank you! :)

I managed to get 4 piezo elements to work, limited by the FPGA. This was actually enough for some reasonable horizontal resolution since I used a phase array configuration, so the downside was the electronics had to generate very precisely timed pulses. The fourth prototype had 10 working elements thanks to replacing the MCU-FPGA duo with just a more powerful FPGA and using conductive glue to more reliably connect the elements themselves.

It was configurable to use any even divisor of 120 MHz, but in practice anything over 1 MHz would not even make it out of the acoustic lens due to the low voltage and low quality impedance matching layer. And much lower frequencies are barely useful anyways, so the true working range was narrow.

For the acoustic lens, I used the parametric design software OpenSCAD, with an equation for aberration-free lenses I had found somewhere and saved long before (will find it if you want) and the speed of sound in the different materials.