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“Dynamic Programming” is not referring to “computer programming”

https://www.vidarholen.net/contents/blog/?p=1172
239•r4um•3d ago•121 comments

The Daily Life of a Medieval King

https://www.medievalists.net/2025/07/medieval-king-daily-life/
130•diodorus•3d ago•68 comments

Perl Versioning Scheme and Gentoo

https://wiki.gentoo.org/wiki/Project:Perl/Version-Scheme
17•RGBCube•1d ago•11 comments

Staying cool without refrigerants: Next-generation Peltier cooling

https://news.samsung.com/global/interview-staying-cool-without-refrigerants-how-samsung-is-pioneering-next-generation-peltier-cooling
323•simonebrunozzi•15h ago•238 comments

Log by time, not by count

https://johnscolaro.xyz/blog/log-by-time-not-by-count
143•JohnScolaro•10h ago•44 comments

Show HN: X11 desktop widget that shows location of your network peers on a map

https://github.com/h2337/connmap
159•h2337•11h ago•66 comments

ESP32-Faikin: ESP32 based module to control Daikin aircon units

https://github.com/revk/ESP32-Faikin
74•todsacerdoti•8h ago•30 comments

XMLUI

https://blog.jonudell.net/2025/07/18/introducing-xmlui/
541•mpweiher•21h ago•285 comments

Debugging Bash Like a Sire (2023)

https://blog.brujordet.no/post/bash/debugging_bash_like_a_sire/
52•gfalcao•3d ago•18 comments

New colors without shooting lasers into your eyes

https://dynomight.net/colors/
446•zdw•3d ago•123 comments

Super-resolution microscopes reveal new details of cells and disease

https://knowablemagazine.org/content/article/technology/2025/super-resolution-microscopes-reveal-new-details-cells
9•rbanffy•2d ago•1 comments

Agents built from alloys

https://xbow.com/blog/alloy-agents/
128•summarity•11h ago•63 comments

The sumerian game early computer game

https://spillhistorie.no/2025/07/10/the-sumerian-game-the-ancestor-of-modern-city-builders/
24•christkv•2d ago•6 comments

Simulating hand-drawn motion with SVG filters

https://camillovisini.com/coding/simulating-hand-drawn-motion-with-svg-filters
231•camillovisini•4d ago•17 comments

Coding with LLMs in the summer of 2025 – an update

https://antirez.com/news/154
523•antirez•1d ago•358 comments

Structuring Arrays with Algebraic Shapes [video]

https://www.youtube.com/watch?v=3Lbs0pJ_OHI
22•surprisetalk•2d ago•1 comments

Hexanitrogen Energies

https://www.science.org/content/blog-post/hexanitrogen-energies
12•thomasjb•2d ago•3 comments

Using the Matrix Cores of AMD RDNA 4 architecture GPUs

https://gpuopen.com/learn/using_matrix_core_amd_rdna4/
63•ibobev•2d ago•3 comments

Stdio(3) change: FILE is now opaque

https://undeadly.org/cgi?action=article;sid=20250717103345
148•gslin•17h ago•70 comments

Show HN: Conductor, a Mac app that lets you run a bunch of Claude Codes at once

https://conductor.build/
191•Charlieholtz•3d ago•86 comments

AI is killing the web – can anything save it?

https://www.economist.com/business/2025/07/14/ai-is-killing-the-web-can-anything-save-it
248•edward•1d ago•306 comments

How to handle people dismissing io_uring as insecure? (2024)

https://github.com/axboe/liburing/discussions/1047
86•nromiun•5h ago•82 comments

Speeding up my ZSH shell

https://scottspence.com/posts/speeding-up-my-zsh-shell
195•saikatsg•20h ago•97 comments

What my mother didn’t talk about (2020)

https://www.buzzfeednews.com/article/karolinawaclawiak/what-my-mother-didnt-talk-about-karolina-waclawiak
68•NaOH•3d ago•29 comments

Subreply – An open source text-only social network

https://github.com/lucianmarin/subreply
112•lcnmrn•17h ago•62 comments

IPv6 Based Canvas

https://canvas.openbased.org/
68•tylermarques•13h ago•11 comments

SIOF (Scheme in One File) – A Minimal R7RS Scheme System

https://github.com/false-schemers/siof
52•gjvc•2d ago•5 comments

How slow motion became cinema’s dominant special effect

https://newrepublic.com/article/196262/slow-motion-became-cinema-dominant-special-effect-downtime
35•cainxinth•3d ago•25 comments

FFmpeg devs boast of another 100x leap thanks to handwritten assembly code

https://www.tomshardware.com/software/the-biggest-speedup-ive-seen-so-far-ffmpeg-devs-boast-of-another-100x-leap-thanks-to-handwritten-assembly-code
338•harambae•15h ago•96 comments

JOVE – Jonathan’s Own Version of Emacs

https://github.com/jonmacs/jove/
65•nanna•4d ago•41 comments
Open in hackernews

How slow motion became cinema’s dominant special effect

https://newrepublic.com/article/196262/slow-motion-became-cinema-dominant-special-effect-downtime
35•cainxinth•3d ago

Comments

deadbabe•8h ago
Slow motion is just the visual equivalent of describing things in great literary detail, so it was always going to be this way.
mc32•8h ago
Or macro/micro zoom-ins and exploded diagrams: people are interested in detail.
adzm•7h ago
It's great when the footage was shot with an appropriate shutter angle. And terrible when you become familiar with interpolation artifacts from artificially generating frames, because then you will start to notice it everywhere, kind of like bad kerning.
rowanG077•7h ago
I expect it won't take too long for this to be fixed with AI.
superb_dev•6h ago
You don’t have to know what you’re doing if AI can just paper over it!
rowanG077•5h ago
I don't understand this comment. Of course the person mastering/editing the movie will have to know what they are doing. They need to ensure it's done properly. AI image generation is just a technique in the toolbox to achieve that.
superb_dev•5h ago
I’m saying you could just do it the right way and record in a higher frame rate before reaching for interpolation
rowanG077•5h ago
That's not always practical, and sometimes even impossible for extreme slow motion shots. You aren't going to get cinema level quality out of a 5000FPS camera. For the same reason it's not a solution to say "just make every effect practical" instead of CGI.
perching_aix•4m ago
Really high quality AI-based offline interpolation methods do exist already, though the usual caveats still apply: the larger the motion, the less good it is. Though whether the quality is passable is a decision that needs to be made in any case.
jeffwass•5h ago
> About 20 years ago, a neuroscientist named David Eagleman strapped a bunch of students into harnesses, hoisted them to the top of an imposing metal tower, and then, without warning, dropped them 150 feet. Though the students landed safely in nets, the experience was—by design—terrifying. Eagleton wanted to simulate the feeling of plummeting to one’s death.

FYI, the experiment is not as insane as the article makes it seem.

The subjects knew there would be a drop involved, and they timed others doing the drop first before estimating the elapsed time in their own drop.

kuboble•4h ago
One related observation about time slowing down.

When you get better at juggling, objects really start falling down in slow motion (e.g a glass from a cupboard).

I guess my brain stores trajectories in cache instead of having to compute them and I get higher fps than I used to.

throw310822•1h ago
Interesting, recently I'm playing squash more often and I'm improving. One of my observations, or mental notes, is that the ball is slow. I have all the time to look at it, see where it's going and decide what's the best moment to hit it back. I thought this observation was the result of being more calm and focused, but maybe it's my brain that's getting faster at this precise task.
krior•1h ago
Relevant kurzgesagt-video on how brains predict the future to "slow things down": https://youtu.be/wo_e0EvEZn8
MIC132•33m ago
This is also very noticeable in Video Games. I remember the first time I played One Step From Eden, I thought I would never be able to keep up with it's frantic pace, but the more practice and understanding I had the more the game "slowed down". To a point of course, it's still a fast game but it feels orders of magnitude slower than initially.
SideburnsOfDoom•11m ago
The brain stores a memory of what the body does. I learned some juggling. It's is very repetitive. It's catching falling objects, drilled into memory.

And now, when there's an accidental falling object, often my hand just moves to the exact correct position to catch it.

mrob•3h ago
Slow motion is a workaround for the bad motion quality that results from the extremely low frame rate of 24 fps. If we standardized on something less bad, e.g. 120 fps, it wouldn't be necessary. With modern digital cameras and efficient LED lighting this won't be unreasonably expensive.
pjc50•1h ago
Plenty of people are still unhappy with any change from the 24fps standard.
mrob•1h ago
I don't understand it at all. As I child, I once visited Futuroscope[0] in France, a kind of cinema theme park. It has many different projection systems, e.g. 3D, dome screen, ultra-wide screen. The one that impressed me most was the Showscan[1]. This is analog film running at 60fps. I liked it so much I watched both Showscan movies they were showing twice. 60fps is by no means high frame rate, but even that was an enormous improvement over 24fps.

I'm not aware of any movies shot in non-interleaved 120fps (AFAIK all the movies advertised as "120fps" are 2*60fps stereoscopic with the frames interleaved between the eyes). Considering how much better games look in high frame rate compared to 60fps I'd love to see a non-interleaved 120fps movie.

[0] https://en.wikipedia.org/wiki/Futuroscope

[1] https://en.wikipedia.org/wiki/Showscan

Joeboy•58m ago
> I'm not aware of any movies shot in non-interleaved 120fps

I think Billy Lynn's Long Halftime Walk? Although I'm not sure if you can actually watch it at 120fps.

mrob•38m ago
I thought that was 2 * 60fps stereoscopic (which technically is 120fps so there's no false advertising, just not in the same way as Showscan is 60fps). I'm also not aware of any way to watch it in 2 * 60fps if you missed the original showings.
Mashimo•16m ago
Seems like you can get it in 120 fps 2D, from Wikipedia:

> To accommodate the film's wide release, various additional versions of the film were created.[3] They include 120 fps in 2D and 60 fps in 3D as well as today's current standard of 24 fps. The film also received a Dolby Cinema release, with two high dynamic range versions that can accommodate 2D and 3D, with up to 120 fps in 2K resolution.

https://en.wikipedia.org/wiki/Billy_Lynn%27s_Long_Halftime_W...

nicoloren•2h ago
No mention of John Woo in the article but The Matrix is here... Weird choice.
Joeboy•2h ago
A few hasty, disconnected thoughts about slow-motion:

1) Back in the day, you'd use slowmo if you wanted to make something look bigger and more impressive, like scale model work or making a human-sized person look like a giant[0]. Maybe people just figured out the same effect works at 1:1 scale. Or maybe it started working at 1:1 scale after people got used to it being associated with big and impressive things.

2) It's just become a lot easier and cheaper, in the same sort of way that shallow depth of field was everywhere after large-sensor consumer video cameras started appearing (notably the Canon 5D mkii). You don't even have to remember to overcrank the camera, you can fake it in post with Twixtor or its descendents.

3) Not sure what the state of play is now, but for a while higher frame rates were one of the main things distinguishing "cinema" cameras. Eg. maybe you could shoot at 180fps but only with an extra crop factor or with certain codecs. Maybe that focused film makers' minds on it a bit.

4) I don't think you ever see step printing [1] anymore (which is when you repeat frames, instead of overcranking or interpolating them). Maybe it's due a comeback.

[0] https://www.youtube.com/watch?v=2XWiV1J4zKc

[1] https://www.youtube.com/watch?v=ju65gr9sUjk

pavlov•2h ago
I watched Pixar’s “Elio” with the kids yesterday and I could swear there was a step printing effect in a montage.

So I don’t think it’s quite that uncommon. For editors it serves a useful purpose as an effect that feels perceptually different than regular slow motion and adds variety to cuts.