abound
Joined 3 years ago
Joined 3 years ago
I'm trying to figure out how heat dissipation works. Specifically, I have a block of aluminum with extruded fins (as a heat sink) and I'm trying to understand how many 30-watt LEDs I can place on it. I have a fan as well, and I'd like to understand how fast I need to run it at different power levels (the LEDs are dimmable). I can gather measurements empirically (which I'll do), but I also want to understand the basic mathematical basis I should use for estimating these values.Astro is also great (as others have noted) esp if you want to leverage the JS ecosystem at large.
I want to hear about the human author's motivations for doing this, the hard parts of doing the deobfuscation, their emotions when finding out what it did, etc. This is none of that.
Kagi uses Crystal for their search backend [1]. How they feel about that today and whether that was the right call are, of course, separate questions.
[1] Previous thread: https://news.ycombinator.com/item?id=38421149
These providers have very little incentive to charge unprofitable prices (except maybe capturing more of the market, but there's not much lock-in here), so it's reasonable to assume somewhere in that spread is the "true" cost of being in this business, all expenses included.
[1] I'm using https://gpus.io as a reference here, and that's on-demand prices, which will tend to be the highest relative to other options.
Not to say it can't still be a bubble, just that there is legitimately profit to be had and perhaps some sustainable equilibrium in the future.
The project has had hundreds of commits (incl major features) since that last release.
curl https://wthr.dev/Washington,DC
The geocoding heuristics can be a bit wonky, but it works decent.(also I have comically strict rate limits in place, so you probably don't want to use this. it's also running out of my basement)
It's frequently the same literal scientists arguing against the existence or severity or cause of things like cigarette-caused illnesses, acid rain, the hole in the ozone layer, and yes, anthropogenic climate change. And there's a well-established playbook for how they do it too (exploit Fairness Doctrine, abuse inherent shape of scientific method, etc). Really a fascinating read if you care about this stuff.
Just give them money, which they can choose to turn into compute or intelligence.
> Someone ultra wealthy person owns a whole data center, and offers 10% of the capacity for helping "nature and animals"?
Offer that compute to them directly and let them decide how to use it.
The theme here, somewhat ironically, is agency. Don't assume you know how best to help a project, just ask them.
"Ramon" should shut down this experiment, and if they actually care about "Earth's nature and animals", make those contributions directly themselves, working with the maintainers to make sure their changes are desired + well-received.
Volume of a AAA battery = ~3.85 cm^3
And let's give it a density of the densest elemental metal (Osmium), at 22.6 g/cm^3
Assume the battery stores pure energy (I know, I know). So E = mc^2, which is like 8.99 x 10^16 J / kg
So that battery would hold about 22.6 g/cm^3 * 3.85 cm^3 * 8.99e16 J / kg = 7.8 * 10^ 15 joules = ~2.2 TWh, about a trillion times more than a normal AAA battery.
Doing some LLM-assisted sleuthing, a large cruise ship can use over 80,000 gallons of fuel a day [1]. A bit of searching indicates marine fuels have a density of approx 39 MJ/L (I'm using volumetric density for consistency), so 80,000 gallons * 39 MJ/L = about 1.1 x 10^7 megajoules = 3.2 GWh.
So a 2.2 TWh AAA battery could power that ship for 671 days.
Of course, the practical physics here are nonsense and there are obvious safety considerations associated with your AAA-sized nuclear weapon, but maybe that's what the author was getting at?
[1] https://blog.windstarcruises.com/how-much-fuel-cruise-ship-u...
Sourcehut: https://git.sr.ht/~bsprague/
GitHub: https://github.com/bcspragu
Resume: https://bsprague.com