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Aren't there stable astral radio signal sources detectable with ng quantum sensors; such as Rydberg antenna arrays?

How many astral signals does a receiver need to fix to determine the time of day on earth (~theta) given lat/long?

How many astral signals does a receiver need to fix to determine lat/long/altitude given the current time?

How many astral signals does a receiver need to fix to determine to infer the current time, given geometrically-impossible triangulation and trilateration solutions given the known geometry of the cosmos and the spherical shape of the earth?

There is a regular monotonic tick in quantum waves; but not a broadcast planetary time offset/reference?

"Simple Precision Time Protocol at Meta" https://news.ycombinator.com/item?id=39306209 :

> FWIW, from "50 years later, is two-phase locking the best we can do?" https://news.ycombinator.com/item?id=37712506 :

>> TIL there's a regular heartbeat in the quantum foam; there's a regular monotonic heartbeat in the quantum Rydberg wave packet [photoionization] interference; and that should be useful for distributed applications with and without vector clocks and an initial time synchronization service

"Quantum watch and its intrinsic proof of accuracy" (2022) https://journals.aps.org/prresearch/abstract/10.1103/PhysRev...

..

Re: ntpd-rs and higher-resolution network time protocols {WhiteRabbit (CERN), SPTP (Meta)} and NTP NTS : https://news.ycombinator.com/item?id=40785484 :

> "RFC 8915: Network Time Security for the Network Time Protocol" (2020)


Would such an integrated nanophotonic light source substitute for quantum dots, for cavity QED QC and sensors?

"Electrons turn piece of wire into laser-like light source" (2022) https://news.ycombinator.com/item?id=33490730 :

"Coherent Surface Plasmon Polariton Amplification via Free Electron Pumping" (2022) https://doi.org/10.21203/rs.3.rs-1572967/v1


Notes re: CFD, Navier Stokes,

"Deep Learning Poised to ‘Blow Up’ Famed Fluid Equations" https://news.ycombinator.com/item?id=31049608

https://github.com/chennachaos/awesome-FEM4CFD?tab=readme-ov...

>> Numerical methods in fluid mechanics: https://en.wikipedia.org/wiki/Numerical_methods_in_fluid_mec...

jax-cfd mentions phiflow

jax-cfd > Other awesome projects: https://github.com/google/jax-cfd#other-awesome-projects

PhiFlow: https://github.com/tum-pbs/PhiFlow/

We had a monochrome green aerodynamic simulation app literally on floppy disks in middle school in approximately 1999 that was still cool then. IIRC various keyboard keys adjusted various parameters of the 2d hull that was tested to eventually - after floppy disc noises - yield a drag coefficient.

TIL that the teardrop shape maximizes volume and minimizes drag coefficient, but some spoiler wings do generate downward lift to maintain traction at speed.

A competitive game with scores and a leaderboard might be effective.

...

Navier-Stokes for compressible and incompressible fluids, but it's a field of vortices with curl so SQG/SQR Superfluid Quantum Gravity / Relativity has Gross-Pitaevskii for modeling emergent dynamics like fluidic attractor systems in exotic states like superfluids and superconductors and supervacuum.

TIL the mpemba effect says that the phase diagram for water is incomplete because one needs the initial water temperature to predict the time to freeze or boil; those have to be manifold charts like HVAC.

There's a Gross-Pitaevskii model of the solar system; gravity results in n-body fluidic vortices which result in and from the motions of the planets and other local masses.

/?hnlog "CFD" :

From "FFT-based ocean-wave rendering, implemented in Godot" https://news.ycombinator.com/item?id=41683990 :

> Can this model a fluid vortex between 2-liter bottles with a 3d-printable plastic connector?

> Curl, nonlinearity, Bernoulli, Navier-Stokes, and Gross-Pitaevskii are known tools for CFD computational fluid dynamics with Compressible and Incompressible fluids.

> "Ocean waves grow way beyond known limits" (2024-09) https://news.ycombinator.com/item?id=41631177#41631975

Also, recently I learned that longitudinal waves in superfluids (and plasmas) are typically faster than transverse standing waves that we observe in fluid at Earth pressures.


UML class diagrams in mermaid syntax require less code than just defining actual classes with stubbed attrs and methods in some programming languages.

Years ago I tried ArgoUML for generating plone classes/models, but there was a limit to how much custom code could be round-tripped and/or stuffed into UML XML IIRC.

Similarly, no-code tools are all leaky abstractions: they model with UI metaphors only a subset of patterns possible in the target programming language, and so round-trip isn't possible after adding code to the initial or periodic code-generation from the synced abstract class diagram.

Instead, it's possible to generate [UML class] diagrams from minimal actual code. For example, the graph_models management command in Django-extensions generates GraphViz diagrams from subclasses of django.models.Model. With code to diagram workflow (instead of the reverse), you don't need to try and stuff code in the extra_code attr of a modeling syntax so that the generated code can be patched and/or transformed after every code generation from a diagram.

https://django-extensions.readthedocs.io/en/latest/graph_mod...

I wrote something similar to generate (IDEF1X) diagrams from models for the specified waterfall process for an MIS degree capstone course.

It may be easier to prototype object-oriented code with UML class diagrams in mermaid syntax, but actual code shouldn't be that tough to generate diagrams from.

IIRC certain journals like ACM have their own preferred algorithmic pseudocode and LaTeX macros.


> The magic of QuickBasic was that it was an editor, interpreter, and help system all rolled up into a single EXE file. Punch F5 and watch your BAS file execute line-by-line.

That's still how vscode works; F5 to debug and Ctrl-[Shift]-P like CtrlP.vim: https://code.visualstudio.com/docs/debugtest/debugging

FWICS,

The sorucoder.freebasic vscode extension has syntax highlighting: https://marketplace.visualstudio.com/items?itemName=sorucode...

There's also an QB64Official/vscode extension that has syntax highlighting and keyboard shortcuts: https://github.com/QB64Official/vscode

re: how qb64 and C-edit are like EDIT.COM, and GORILLA.BAS: https://news.ycombinator.com/item?id=41410427

C-edit: https://github.com/velorek1/C-edit


I tried QB64 a couple years ago, but IIRC it's still compiled as opposed to interpretative, e.g. you can't Ctrl-Break and drop into the current executing line of BASIC code unless they've radically changed how it works.

'Edit' - a CLI/TUI text editor similar to EDIT.COM but written in rust - is now open source https://news.ycombinator.com/item?id=44031529

Rather, QB was the pico8 of the 1990s. Convenient, self-contained, mysterious, quasi-powerful, in-app help menu for the entire language and API, and a few built-in demo games.

https://news.ycombinator.com/item?id=43067347 :

> Still hoping for SR-IOV in retail GPUs.

> Not sure about vCPU functionality in GPUs

> Process isolation on vCPUs with or without SR-IOV is probably not as advanced as secure enclave approaches

[Which just fell to post-spectre side channels]

>> Is there sufficient process isolation in GPUs?

/? Sr-iov iommu: https://www.google.com/search?q=sr-iov+iommu

Is there branch prediction in GPUs? What about other side channels between insufficiently-isolated GPU processes?

I see that vgpu_unlock no longer works for technical reasons.


How does objcurses compare to display3d in implementation and features?

Textual has neat shell control characters for CLI utilities that might be useful.

FSV is an open clone of FSN (the 3d file browser from Jurassic Park), but it requires OpenGL.


Pretty cool! I honestly hadn’t seen display3d before, not when I was researching similar projects, nor while working on my own and debugging issues. Just checked it out now, and as someone currently learning Rust, I really liked it and definitely starred the repo. Love the Unicode rendering idea.

Textual looks fun too, feels very much like a Python equivalent of ratatui from Rust, I also has a project with this library. Definitely something I might explore for building overlays or adding interactive controls around the core renderer, though curses also can render basic buttons and menus.

As for FSV, yeah, that’s more in the OpenGL/GPU territory. My goal was to stay purely terminal-based. By the way, I wasn’t sure if you brought up FSV just for the retro-3D vibe comparison, or if you had something more specific in mind? Curious what you meant there


Just found display3d today, too.

Maybe it was an ascii CLI video of a 3d scene that I remember seeing.

Maybe molecule visualizations? Is it possible to discern handedness from an objcurses render of a molecule like sugar or an amino protein?

Could a 3D CLI file browsing interface useful enough for a computer green scren in a movie like Jurassic Park or Hackers be built with objcurses? wgpu compiles to WASM and WebGL


What is the advantage of making graphene from inks and dyes instead of from flash-heated unsorted recycled plastic or lasered fruit peels?

/? Graphene laser fruit peel: https://www.google.com/search?q=graphene%20laser%20fruit%20p...


This is covered in the Introduction.

They apply the ink/dye to a surface and then use a laser on it, leaving the graphene behind.


> A versatile “Paint & Scribe” methodology is introduced, enabling to integrate LIG tracks onto any wettable surface, and in particular onto printed and flexible electronics. A process for obtaining freestanding and transferrable LIG is demonstrated by dissolving acrylic paint in acetone and floating LIG in water. This advancement offers novel avenues for diverse applications that necessitate a transfer process of LIG.

I still don't understand why that's only possible with commercial inks and dyes but not with also aromatic fruit peels?


Is there a good way to add __del__() methods or to wrap Context Manager __enter__()/__exit__() methods around objects that never needed them because of the gc?

Hadn't seen this:

  import gc
  gc.disable()
Cython has __dealloc__() instead of __del__()?

Also, there's a recent proposal to add explicit resource management to JS: "JavaScript's New Superpower: Explicit Resource Management" https://news.ycombinator.com/item?id=44012227

> Abstract: [...] Overall, our findings suggest that AI's persuasion capabilities already exceed those of humans that have real-money bonuses tied to performance. Our findings of increasingly capable AI persuaders thus underscore the urgency of emerging alignment and governance frameworks.

P.22:

> 4. Implications for AI Regulation and Ethical Considerations


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