If you've ever used liquid nitrogen to snap-freeze tissue in gluteraldeyde for electron microscopy, the problem is readily apparent: you can't get the heat out of large chunks of meat fast enough. And by large, I mean 1 cm cubed. 0.5 cm cubed, maybe.
Readit Newskilljoywashere commented on The Microscopic Forces That Break Hearts thewaitlist.substack.com/... · Posted by u/surprisetalk
What exactly is made in the US though? Besides cars and some forged tools, I can’t think of a single thing made in the US.
Edit: I looked it up, it’s a lot of things. Airplanes, military aircraft, helicopters, satellites, rockets, construction/agriculture equipment (Caterpillar, John Deere), ICE and EV cars, chips, medical equipment (MRI, CT scanners), lots of defense stuff, drugs and pharmaceutical, processed agri goods etc.
A buddy from Bridgepoint made a point to me once: maybe we're not number one in every industry, but find me a sector where we're not in the top 10.
In the pandemic there was a lesson I read somewhere that I will always keep with me and repeat: "efficiency" and "resiliency" are opposing points on a spectrum. Once you hear it I think you'll see it everywhere. What you describe is efficient but it isn't resilient.
This. As someone who spends a lot of time thinking about national security problems, it's hard to convey how badly the 1980s MBA education failed us as a country. "Greed is good." Sure, Gordon. For who? Who's greed is good for who? How about the people of the country labor for the long term wealth of the nation? How about we all work for the long term wealth of the planet?
killjoywashere commented on Who does your assistant serve? xeiaso.net/blog/2025/who-... · Posted by u/todsacerdoti
In case anyone thinks assistants serving others can't have some incredibly dystopian consequences, The Star Chamber podcast has an incredible 2-part series, * With Friends Like These ...* describing a case that boggles the mind.
Part 1: https://www.youtube.com/watch?v=VVb7__ZlHI0 (key timestamps: 31:45 and 34:3)
Part 2: https://www.youtube.com/watch?v=vZvQGI5dstM (key timestamp: 22:05)
If you're like "Woah, this seems kinda disconnected, I'm missing context..." Uh, yeah, there's so much context.
Here's the link that most critical bit in Part 2: https://youtu.be/vZvQGI5dstM?feature=shared&t=1325
And if you listen to the whole thing, here's the almost innocuous WSJ article:
Here's the WSJ article that put it into the press: https://www.wsj.com/politics/national-security/workplace-har...
killjoywashere commented on How does a screen work? makingsoftware.com/chapte... · Posted by u/chkhd
I happen to have a stereo microscope at my desk, so I put my Pixel 9 under there. At 100x mag (10x ocular x 10x objective) it looks like there are 3 layers: as I move my head around slightly (so the image is moving over my retinas), the blue moves faster and the red almost stays still, with green somewhere in the middle.
may you please elaborate on why it is important, why hasn't been solved before and what new applications may you imagine with it, please?
David Hilbert was one of the greatest mathematicians of all time. Many of the leaders of the Manhattan Project learned the mathematics of physics from him. But he was famous long before then. In 1900 he gave an invited lecture where he listed several outstanding problems in mathematics the solution of any one of which would change not only the career of the person who solved the problem, but possibly life on Earth. Many have stood like mountains in the distance, rising above the clouds, for generations. The sixth problem was an axiomatic derivation of the laws of physics. While the standard model of physics describes the quantum realm and gravity, in theory, the messy soup one step up, fluid dynamics, is far from a solved problem. High resolution simulations of fluid dynamics consume vast amounts of supercomputer time and are critical for problems ranging from turbulence, to weather, nuclear explosions, and the origins of the universe.
This team seems a bit like Shelby and Miles trying to build a Ford that would win the 24 hours of LeMans. The race isn’t over, but Ken Miles has beat his own lap record in the same race, twice. Might want to tune in for the rest.
The proof of the pudding will be affordable housing, which demands both a fall in property values and acceptance of a lower return on investment for property.
I wish I believed there won't be social engineering and lobbying to counter this.
I look forward to the first LLM-designed massively multifamily dwellings. I'm sure no one will fall through any floors.
killjoywashere commented on Prohibition and ice cream in the US Navy oldsaltblog.com/2025/05/h... · Posted by u/speckx
As an ex-Sub RO, specifically during the 2000's in Pearl Harbor:
Yeah, this sounds 100% true. I could have typed this, and at one point I was one of those bringing a bottle underway (though I was never drunk on watch; it was due to our ports having no alcohol). Honestly given how alcoholic half the crew was if there wasn't alcohol onboard (just to stop the withdrawals) the boat probably would have had to cancel the underway.
I can say that by the time I retired (2023) it was nothing like that. The ERB's in the 2011 timeframe wiped out an absolute TON of manpower but it did have the desired effect of destroying that culture almost immediately. Anyone with even a hint of alcohol issues in their record was sent packing with no recourse.
Prior to those ERB's the running joke was you had to have a DUI to be promoted to Chief. After that a DUI was not technically disqualifying, but was in reality a career ending event. Overnight things went to a culture of being afraid of doing anything that could get you caught out by a future ERB if you escaped that one.
It also caused the manpower issues we see now though, resulting in the manning shortfalls that are most critical in 7th Fleet. That fleet sees the worst shortfalls because it is the one that requires people to live overseas (Japan and Guam), which can be a hard sell. On top of that the deployment cycle has a far higher optempo; generally I spent 60-70% of a given tour on deployments. The rest of the Navy sees between 35% and 40% (outside of SOCOM commands). There's an ongoing impression that you have 7th Fleet Sailor's, then the rest of the Navy, as the Sailor's who like 7th Fleet don't want to go elsewhere and the rest of the Navy has no desire to join them.
Note: I was a 7th Fleet Sailor for most of my career; that stint in Pearl Harbor was the only Sea Duty I did outside of there.
Bob?
killjoywashere commented on Why I no longer have an old-school cert on my HTTPS site rachelbythebay.com/w/2025... · Posted by u/mcbain
FWIW, it is ZeroSSL. I want there to be more major ACME providers than just LE, but I'm not sure about ZeroSSL, personally. It seems to have the same parent company as IdenTrust (HID Global Corporation). Probably a step up from Honest Achmed but recently I recall people complaining that their EV code signing certificates were not actually trusted by Windows which is... Interesting.
IdenTrust participates in the US Federal PKI ecosystem, so they likely have strong incentives to charge exorbitantly. Those free certs are probably meant to facilitate development of gov-specific capabilities by random subcontractors long enough to figure out how to structure a contract mod that passes the anticipated cost onto the government.
Don’t hate the player, hate the game.
I see a number of comments here misunderstanding the power of this laser. Laser facilities like this one are designed for incredibly short pulses that are femtoseconds long, and total energy per pulse is typically on the order of tens of joules, roughly equivalent to a few seconds of your phone flashlight. They can’t destroy much of anything on human scales. They are made to do physics research, and there is absolutely no pathway from a 2 petawatt laser that delivers a few joules a minute to a 2 petawatt laser that hits full output power for a few seconds: that would be 10^16 times more energy, and of course that brief pulse would use more electricity than all the US uses in a year and completely destroy the University of Michigan in spectacular fashion (very roughly equivalent to a five megaton nuclear explosion.)
If you’re interested in the most energy per pulse, you want the “most energetic” laser, which is the NIF at LLNL. That’s about 2 megajoules per pulse or half a kilowatt hour. Definitely enough to kill a mosquito, but it doesn’t even register on the scale of Death Star style lasers from fiction.
And if you want the most destructive power, those are all military lasers. Which can absolutely destroy things science fiction style, but on a fairly small scale and with some important limitations.
Fun fact: these laser pulses are so short they are no longer a single wavelength. They have a spectrum due to the uncertainty principle. And at this short of a time scale, it’s pretty broad.