thatcherc

6 ms·

31.
by thatcherc 3y ago
Are the pictures in that second link from a diffusion model? They look flashy but they don't look like any spacecraft I recognize (and are weirdly asymmetric) and especially don't look like the Starlink satellites SpaceX has launc
32.
Space Drugs Factory Denied Reentry to Earth(gizmodo.com)
6 points by thatcherc 3y ago|0 comments
33.
by thatcherc 3y ago
I don't really know how to read this page, but it looks like the time of closest approach has already passed - > Closest approach time of impactors: t_min = 2023/08/14 04:48 TDB and t_max = 2023/08/15 12:22 TDB I
34.
by thatcherc 3y ago
Slim binaries and better static compilation were mentioned as big future features in the closing remarks, so that'd be a good one to watch - a lot of the people there working in embedded, robotics, or plane satellite projects were exci
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by thatcherc 3y ago
If JuliaCon last week is any indication, there might be more Lisp in space in the future! As long as the runtime size can be shrunk down a bit, but it sounds like that's in the works too.
36.
by thatcherc 3y ago
I'm reading that right! It's cool. It's all Scheme, so get ready for that if you haven't seen it before. It's really interesting stuff though, all about how to make really extensible systems. I'm not sure how
37.
by thatcherc 3y ago
As the author notes, this is very much in the style of the aphyr's Interview series of stories like "Rewriting the Technical Interview" - [0] - which are all great reads as well. [0] - https://aphyr.com/posts&
38.
by thatcherc 3y ago
More of a collection of notes exported from my Joplin notes than a regular blog: https://jthatch.com/notes/index.html
39.
by thatcherc 3y ago
Yes! In principle at least, and only miniscule/undetectable amounts of energy. The first gravitational wave detectors build were these "Weber bars" [1] - big block of aluminum that were supposed to resonant mechanically (like
40.
by thatcherc 3y ago
I'll go in to plug the Clockwork Rocket series (Orthogonal and its sequels) and Incandescence, all of which have much more to do with physics and spacetime than Permutation City and short story collections like Instantiation (which I a
41.
by thatcherc 3y ago
Not OP, and I'd have to see the prompt to run it on my set up, but I but together a refurbished HP Chromebox with some extra RAM and an SSD for a total of $250 and it'll run all the 13B models about as fast as I can type on my pho
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by thatcherc 3y ago
Do you have code for this (or pointers to what you used to set this up)? I'd love to set up something similar!
43.
by thatcherc 3y ago
Weird article. This section stuck out: > Hajimiri, who led the Caltech that developed MAPLE, explained how the wireless transmission of energy through space is based on a quantum phenomenon called “interference.” And then they go on to d
44.
by thatcherc 3y ago
This is very helpful, thanks! Looks like I have some reading to do about IP forwarding.
45.
by thatcherc 3y ago
Fairly off-topic, but I've been having the hardest time finding a Wireguard configuration guide that lets me connect two peers (my phone and an SBC at my house behind my router) to a VPS peer (with a public IP) in a way that routes all
46.
by thatcherc 3y ago
Author seems to be using billion == 10^12 instead of the common billion == 10^9. A lot of the math still works out since there's a multiply and a divide by a billion, but it is a little confusing to see passages like this: > Given t
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by thatcherc 3y ago
It's the same reason the Voyagers launched in the late 70s - the Grand Tour configuration of the planets [0]. The outer planets align in a way that lets you chain together several gravity assists to achieve high enough speeds to escape
48.
by thatcherc 3y ago
Could you point me toward any more info or keywords on "the cartpoll demo famously tripped up derivative based reinforcement learning for awhile"? It sounds like an interesting bit of history but my google searches are only bringi
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by thatcherc 4y ago
Good thread! https://threadreaderapp.com/thread/1642726595436883969.html
50.
Show HN: ReplGPT.jl, a ChatGPT shell mode for Julia(github.com)
17 points by thatcherc 4y ago|0 comments
51.
by thatcherc 4y ago
Have you checked out Symbolics.jl? It's a lot like SymPy.jl but with all the niceness of a implementation in native Julia instead of a python binding.
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by thatcherc 4y ago
Any idea how this picture was made? Was the Goldstone dish scanning a really tightly focused beam across the region of space where this asteroid was, or are they relying on some kind of doppler or synthetic aperture radar effect with the re
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by thatcherc 4y ago
Here's another article that seems to be a summary of the Bloomberg article (but without the paywall) - [0] The ban under consideration seems to be a ban on the sale of new gas stoves, although I don't think the article actually
54.
by thatcherc 4y ago
That is a great link list! I've been curious about converting over a few micro-USB devices I have around so I might pick up some of these boards. Do you have any recommendations for search terms for boards that would take in DC power (
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by thatcherc 4y ago
One thing I've wanted to do is put a battery charge monitor on the escooter I leave at work. I'd like it to report the charge back to a computer I have at my house. Running WireGuard on an ESP would let me send battery telemetry b
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by thatcherc 4y ago
Pre-covid (and pre-renovation) it had a laser cutter too! Hoping that comes back soon. By all accounts it was really popular and well used.
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by thatcherc 4y ago
That 100% efficient figure is correct - you get one Watt of heat for one Watt of electricity. It's just that heat pumps can deliver 3 or 4 Watts of heat for each Watt of electricity (usually quoted at around 300% or 400% efficiency!).
58.
by thatcherc 4y ago
"Volts" by David Roberts![0] A lot of subjects covered related to decarbonization and getting and using more renewable electricity, usually by interviewing a variety of experts [0] - https://www.volts.wtf/
59.
by thatcherc 4y ago
That's a big takeaway I got from the book Electrify by Saul Griffith (a really good read). The book only really looks at US carbon emissions, but a substantial chunk of emissions comes from refining and transporting petroleum project
60.
by thatcherc 4y ago
The big this seems to be that their noising/denoising process is invertible (to some extent) so it can be used to generate uncertainties, which is something the article says diffusion models can't do. The intuition is that the &qu

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