qjkxbmwvz
@qjkxbmwvz@startrek.website
- Comment on Computer Science, a popular college major, has one of the highest unemployment rates 4 days ago:
…the San Francisco gold rush in 1949.
Classic CS major, making an off-by-one(hundred years) error ;)
- Comment on FFmpeg moves to Forgejo 6 days ago:
I have some bad new for you about Linux…
- Comment on Tried naming the states from memory as a European 1 week ago:
Maybe in the before times, but with the LA residents’ response to the fascist in chief, I think most of us in San Francisco are honored to share the state, and be confused with, Angelenos.
Just keep the Dodger’s in SoCal. This is the Giants’ city.
- Comment on Physicists Create First-Ever Antimatter Qubit, Making the Quantum World Even Weirder 4 weeks ago:
Your numbers seem reasonable — more intuitive for me to work in terms of pressure. Atmosphere is (roughly) 1e3 Torr, good UHV can be around 1e-10, so that’s 13 orders of magnitude, which is (roughly) the same difference that you calculated.
- Comment on Physicists Create First-Ever Antimatter Qubit, Making the Quantum World Even Weirder 4 weeks ago:
Aluminum foil is very common in physics labs. And a main use for it is “baking”! To get ultra high vacuum (UHV)* you generally need to “bake out” your chamber while you pump down.
Sadly, it’s usually not food grade aluminum foil, as that can contain oils, and oils and vacuum are generally a big no-no.
*Just how good is UHV? Roughly: I live in San Francisco, which is ~7 miles by ~7 miles (~11km). Imagine you raise that by another 7 miles to make a cube. Now, evacuate every last molecule of gas out of it. Now take a family sedan’s trunk, fill it with 1 atmosphere of gas, and release that into the 7 mile cube. That’s roughly UHV pressure.
- Comment on Two major AI coding tools wiped out user data after making cascading mistakes 4 weeks ago:
From TFA:
“I have failed you completely and catastrophically,” Gemini CLI output stated. “My review of the commands confirms my gross incompetence.”
- Comment on UwU brat mathematician behavior 5 weeks ago:
(…I think you may have gotten whooshed…)
- Comment on Planck units 1 month ago:
Yeah it’s missing the text, “…then the Planck X would be…” for the first two.
- Comment on Breaking the generational barriers 1 month ago:
npr.org/…/behold-the-fatberg-london-s-130-ton-roc…
You’re not just “sticking it to the man” when you do this though — you’re being a dick to your city, its residents, and employees.
- Comment on Bitch shape attack 1 month ago:
Move ‘em 2 millimeters in the wrong direction and you’ll have a bad time
Are you referring to getting, I dunno, yogurt in places outside the digestive tract?
My understanding was that gut bacteria play a pretty crucial (beneficial) role in overall health, not to mention the whole gut-brain stuff.
- Comment on Bitch shape attack 1 month ago:
Pretty sure those “horrible little scalawags” play some pretty crucial roles in the human microbiome…
- Comment on Mullvad's ads are good 1 month ago:
Or just a San Francisco resident — these ads are everywhere on BART (+Muni?) right now. (As far as ads go, they’re pretty good I guess — and no, I don’t even use them, much less work for them.)
- Comment on My reason for wanting HomeAssistant and a locked down VLAN... 1 month ago:
ZigBee router thing:
I’ve been happy with the SMLIGHT SLZB-06M. You can easily flash firmware, and it has PoE which was important for me. I believe it also supports Thread, but I haven’t tried this yet (and I’m not sure if it supports it at the same time as Zigbee).
Zigbee smart plugs from Third Reality have been pretty solid in my experience, and they report power usage.
For circuit breaker level monitoring, I have an Emporia Vue2. I have it running esphome, completely local — unfortunately this requires some simple soldering and flashing, so it’s not turnkey. But it’s been rock solid ever since flashing it. (Process is well documented online.)
I’ve had decent luck with cheap wifi Matter bulbs, but provisioning them is finicky, and sometimes they just crap out and need to be power cycled; Zigbee bulbs (e.g., Ikea) have generally been reliable, though sometimes I’ve had difficulty pairing them initially. After power cycling a Matter WiFi bulb, it takes a while for it to respond to Home Assistant; Zigbee bulbs generally respond as soon as you power them on.
I have a wired smart light switch from TP-Link/Kasa (KS205), and it’s been completely hassle free (and totally local — Matter over wifi). The Kasa smart switch dongles I have work flawlessly but need proprietary pairing, and I’m afraid to update firmware in case they lose local support.
Good luck! Fun adventure :)
- Comment on As neglected as the 7 button on a microwave 2 months ago:
Not parent, but when a minute isn’t quite enough, 77 seconds might do the trick. Multiples of eleven are quick to enter, and with a simple number with no “minute” button, 66s is easier than 1:00.
- Comment on Friendly reminder that Tailscale is VC-funded and driving towards IPO 2 months ago:
I think a lot of companies view their free plan as recruiting/advertising — if you use TailScale personally and have a great experience then you’ll bring in business by advocating for it at work.
Of course it could go either way, and I don’t rely on TailScale (it’s my “backup” VPN to my home network)… we’ll see, I guess.
- Comment on Hell 2 months ago:
It’s a pretty standard bandwidth/latency tradeoff in my view: email is high bandwidth (it’s in writing, you can re-read, etc.), whereas phone is low latency (several back-and-forth explanations can happen in seconds). Each has its place.
If social anxiety is a factor, that’s a perfectly valid, but separate, issue.
- Comment on this is my hole! 2 months ago:
- Comment on Congratulations, homosexual! 2 months ago:
In my head it was definitely Cave.
- Comment on Hit it and quit it 2 months ago:
“Full term” pregnancy is ~40w from last menstrual period, or ~38w from conception. There are ~4.345 weeks/month, putting full term at ~8.75 to ~9.2 months. Note the 9.2 months includes ~2 weeks before fertilization.
- Comment on Today is June 1st, the start of Pride Month. This scene from "Blood Oath" weighs heavily on my mind. 2 months ago:
Because not all humans strive for honor.
- Comment on Hit it and quit it 2 months ago:
People praise the female reproductive system as miraculous because it can make a baby in only 9 months. Like that’s neat and all, but my reproductive system can make a baby in approximately 13 seconds, so I don’t see what all the fuss is about.
- Comment on The plan for nationwide fiber internet might be upended for Starlink 2 months ago:
Yep, you’re right — I was just responding to parent’s comment about fiber being best because nothing is faster than light :)
- Comment on The plan for nationwide fiber internet might be upended for Starlink 2 months ago:
That’s…not really a cogent argument.
Satellites connect to ground using radio/microwave (or even laser), all of which are electromagnetic radiation and travel at the speed of light (in vacuum).
Light in a fiber travels much more slowly than in vacuum — light in fiber travels at around 67% the speed of light in vacuum (depends on the fiber). In contrast, signals through cat7 twisted pair (Ethernet) can be north of 75%, and coaxial cable can be north of 80% (even higher for air dielectric). Note that these are all carrying electromagnetic waves, they’re just a) not in free space and b) generally not optical frequency, so we don’t call them light, but they are still governed by the same equations and limitations.
If you want to get signals from point A to point B fastest (lowest latency), you don’t use fiber, you probably use microwaves: arstechnica.com/…/private-microwave-networks-fina…
Finally, the reason fiber is so good is complicated, but has to do with the fact that “physics bandwidth” tends to care about relative bandwidth (“frequency divided by delta frequency”), whereas “information bandwidth” cares about absolute bandwidth (“delta frequency”), all else being equal (looking at you, SNR). Fiber uses optical frequencies, which can be hundreds of THz — so a tiny relative bandwidth is a huge absolute bandwidth.
- Comment on The plan for nationwide fiber internet might be upended for Starlink 2 months ago:
80% of the USA lives within urban areas (source). Urban “fiberization” is absolutely within reach.
Agree that running fiber out to very remote areas is tricky, but even then it’s probably not prohibitive for all but the most remote locations.
- Comment on Geologists doubt Earth has the amount of copper needed to develop the entire world 2 months ago:
So the irony is
I see what you did there…
- Comment on Technically the truth 2 months ago:
Left pedal looks more like a dead pedal to me.
And as others have said, change in direction is still acceleration. That’s part of Newton’s (apocryphal?) apple story — he witnessed an apple falling, and wondered why the moon doesn’t also fall. His amazing insight is that it does fall (accelerate), it’s just that it falls in such a way that it orbits, rather than hits, the Earth (for timescales relevant to a human).
- Comment on Misunderstood the assignment… 2 months ago:
“Can you hold it” was meant as “abstain from pooping for just a little longer,” but was instead interpreted as, “poop, and then hold the poop in your hands.”
- Comment on German court sends Volkswagen execs to prison over Dieselgate scandal 2 months ago:
I think you mean more scrupulous, not less.
- Comment on Forbidden Tech 2 months ago:
If you lose power, you can use one of these cables to power your house (or at least, the part of your house on that phase).
This is not how you should do this, but it can work. It is not a good idea (possibly illegal?).
- Comment on Your help needed: PhD research on why people choose to self-host 2 months ago:
Hopefully you can publish in an open-access journal — if not it would be great if you could share an arXiv preprint :)