jcgrillo

40 ms·

961.
by jcgrillo 2y ago
EANT2 looks really cool, thanks for the link.
962.
by jcgrillo 2y ago
Will it still be maintainable in 30-40yr? Just the other day I pulled my 80 series Land Cruiser's windshield wiper motor to epoxy one of the permanent magnets back on (it had come loose from the housing and was making a horrible grindi
963.
by jcgrillo 2y ago
Right, so not instantaneous? Or is this also "soviet propaganda"?
964.
by jcgrillo 2y ago
Do you have any sources to back these claims? Also, what specifically do you mean by "half the casualties were instant"--is it that "of those who died, half of them died instantly" or "of those killed and injured, h
965.
by jcgrillo 2y ago
That's something that seems to be missing from how people perceive the threat of nuclear weapons. It's pleasant and convenient to believe you'll instantaneously combust in a fireball as hot as the sun, but actually only very
966.
by jcgrillo 2y ago
The real demon here isn't the core it's the flathead screwdriver--lowest among tools. The number of times I've slipped dealing with flathead screws, or stripped them, or nearly had an aneurysm from them is uncountable. No won
967.
by jcgrillo 2y ago
Very cool. Thanks for the links, I'm not very familiar with the Haskell ecosystem, I mostly work in Rust and Go these days. I'll definitely check them out.
968.
by jcgrillo 2y ago
I misread this title (the word "confidence" threw me) and was initially very confused when it turned out to be about dimensional analysis instead of uncertainty. But why not both? A number system with dimensions and which automa
969.
by jcgrillo 2y ago
What would zapping a satellite with a laser achieve? I suppose if you get it hot enough to melt everything, without anything flying off, then it would turn into a spherical drop of molten scrap... but then what?
970.
by jcgrillo 2y ago
This cuts both ways, choosing to not implement flawed portions of the spec could be seen as a good thing. I've always been a bit suspicious of the value of "bug for bug compatibility". You don't actually need transaction
971.
by jcgrillo 2y ago
That is an interesting question. Doing it without losing the load seems challenging but could work if you're basically pummeling an area with raw ore then subsequently mining and refining it? I wonder what the atmospheric consequences
972.
by jcgrillo 2y ago
It's probably not super realistic to mine resources in space and send the raw material down the gravity well but it's hard to imagine any space-based manufacturing without mining. Whether our species will ever attempt such a t
973.
by jcgrillo 2y ago
> They suck to use but they work Yep, exactly. I welded a fitting onto a cast aluminum intake manifold using these things and an oxy-acetylene torch and it came out "good enough"
974.
by jcgrillo 2y ago
I guess it all depends what the work is, I was imagining structural work, like the stuff you'd use hundreds of amps and 3/8" rods for on Earth. Also, I assumed the work would be done by people using hand tools rather than rob
975.
by jcgrillo 2y ago
> Which is the whole point of processes like laser and electron beam welding: minimum heat input to achieve the required penetration. Surely we can agree, all things being equal, the heat affected zone will be larger absent conductive he
976.
by jcgrillo 2y ago
Heat rejection and work holding seem like two hard problems in space. On the lunar surface at least you have some gravity to help with the former, but your heat affected zone is bound to be much larger because the only way heat leaves the p
977.
by jcgrillo 2y ago
While you're correct about the oxide issue, there are welding processes which mitigate this. In particular, using alternating current instead of direct current causes a "cleaning" effect which knocks the oxide off of the weld
978.
by jcgrillo 2y ago
Fair enough, I'm convinced now.
979.
by jcgrillo 2y ago
Admittedly I haven't dug too deep into the references, including the paper the article refers to--and I'm not too well versed in diffusion models either. Those caveats aside, I'm also having trouble making the analogy, and si
980.
by jcgrillo 2y ago
Neither does any other Kafka protocol implementation, evidently ;)
981.
by jcgrillo 2y ago
Try it! You might surprise yourself. EDIT: ah, I see your confusion. A "micrometer" is an aliased term. It means both "a millionth of a meter" and "a tool for measuring very precisely". I used the latter meanin
982.
by jcgrillo 2y ago
Again, too late to edit, but there's some interesting related content here: https://hackaday.io/project/5283-potpourri/log/21475-laser-i... https://hackaday.com/2015/07/24/
983.
by jcgrillo 2y ago
Too late to edit, and somewhat off topic, but I wonder if you could package an interferometer in such a way to work for calipers? https://caltechexperimentalgravity.github.io/IFO.html
984.
by jcgrillo 2y ago
Makes sense, I'll try to work in whole number scaled inches more (although tbh I'm just being picky, eyeballing the fractional part is usually good enough).
985.
by jcgrillo 2y ago
Super cool project! I don't have any answers but really appreciate learning how these things work.
986.
by jcgrillo 2y ago
> tenths and hundredths of an inch "don't mean anything" because we don't divide inches that way in common use Architectural rulers tend to divide inches into tenths for some reason. I have no idea why, because lumber
987.
by jcgrillo 2y ago
In my experience, yes. I've checked with micrometers that are an order of magnitude more precise. You have to be fairly experienced reading it, and it often helps to use a magnifying glass. Also you have to be very careful not to dra
988.
by jcgrillo 2y ago
Yeah I only use calipers and micrometers for machining--I haven found any use for additive manufacturing--and never in metric units because all my tools are imperial. Just strange the calipers punish metric users by giving them only half th
989.
by jcgrillo 2y ago
Looking at my calipers now I noticed that the imperial side is twice as precise as the metric side. Graduations of 0.05mm vs 0.001". I wonder why that is.
990.
by jcgrillo 2y ago
With a decent set of vernier calipers (I have Brown and Sharpe ones) they're accurate to 0.001" (0.02mm) every time. But what's nice about analog measuring tools is you can actually reliably achieve better accuracy--like 0.00

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