fp.

The electromechanical angle computer inside the B-52 bomber's star tracker

https://www.righto.com/2026/04/B-52-star-tracker-angle-computer.html

128•NelsonMinar•3h ago•41 comments

Migrating from DigitalOcean to Hetzner

https://isayeter.com/posts/digitalocean-to-hetzner-migration/

529•yusufusta•6h ago•296 comments

State of Kdenlive

https://kdenlive.org/news/2026/state-2026/

264•f_r_d•8h ago•85 comments

Opus 4.7 to 4.6 Inflation is ~45%

https://tokens.billchambers.me/leaderboard

285•anabranch•3h ago•299 comments

Show HN: MDV – a Markdown superset for docs, dashboards, and slides with data

https://github.com/drasimwagan/mdv

42•drasim•4h ago•12 comments

Fuzix OS

https://www.fuzix.org/

46•DeathArrow•4h ago•20 comments

Scientists discover "cleaner ants" that groom giant ants in Arizona desert

https://www.sciencedaily.com/releases/2026/04/260414075641.htm

46•t-3•2d ago•23 comments

Michael Rabin has died

https://en.wikipedia.org/wiki/Michael_O._Rabin

325•tkhattra•3d ago•70 comments

Sumida Aquarium Posts 2026 Penguin Relationship Chart, with Drama and Breakups

https://www.sumida-aquarium.com/special/sokanzu/en/2026/

109•Lwrless•2d ago•5 comments

Young sons of legendary U.S. marshal ride horseback from Oklahoma to New York

https://texascooppower.com/the-astonishing-ride-of-the-abernathy-boys/

3•mhb•25m ago•0 comments

UpCodes (YC S17) Is Hiring SDRs to Help Make Construction More Productive

https://up.codes/careers?utm_source=HN

1•Old_Thrashbarg•2h ago

Graphs That Explain the State of AI in 2026

https://spectrum.ieee.org/state-of-ai-index-2026

26•bryanrasmussen•2h ago•15 comments

80386 Memory Pipeline

https://nand2mario.github.io/posts/2026/80386_memory_pipeline/

47•wicket•4d ago•10 comments

Amiga Graphics Archive

https://amiga.lychesis.net/

207•sph•13h ago•55 comments

Traders placed over $1B in perfectly timed bets on the Iran war

https://www.theguardian.com/world/2026/apr/18/iran-war-bets-ethics-concerns

27•trocado•1h ago•13 comments

Show HN: Remoroo. trying to fix memory in long-running coding agents

https://www.remoroo.com

4•adhamghazali•4d ago•0 comments

Understanding the FFT Algorithm (2013)

https://jakevdp.github.io/blog/2013/08/28/understanding-the-fft/

19•peter_d_sherman•3d ago•2 comments

Category Theory Illustrated – Orders

https://abuseofnotation.github.io/category-theory-illustrated/04_order/

199•boris_m•13h ago•56 comments

It's OK to compare floating-points for equality

https://lisyarus.github.io/blog/posts/its-ok-to-compare-floating-points-for-equality.html

145•coinfused•4d ago•95 comments

Why Japan has such good railways

https://worksinprogress.co/issue/why-japan-has-such-good-railways/

232•RickJWagner•7h ago•239 comments

Show HN: I made a calculator that works over disjoint sets of intervals

https://victorpoughon.github.io/interval-calculator/

265•fouronnes3•18h ago•47 comments

Measuring Claude 4.7's tokenizer costs

https://www.claudecodecamp.com/p/i-measured-claude-4-7-s-new-tokenizer-here-s-what-it-costs-you

677•aray07•1d ago•473 comments

All 12 moonwalkers had "lunar hay fever" from dust smelling like gunpowder (2018)

https://www.esa.int/Science_Exploration/Human_and_Robotic_Exploration/The_toxic_side_of_the_Moon

428•cybermango•1d ago•242 comments

I’m spending months coding the old way

https://miguelconner.substack.com/p/im-coding-by-hand

318•evakhoury•1d ago•305 comments

The USDA's gardening zones have shifted. (Interactive app and map) (2024)

https://apps.npr.org/plant-hardiness-garden-map/

44•nuke-web3•3h ago•5 comments

The quiet disappearance of the free-range childhood

https://bigthink.com/mind-behavior/the-quiet-disappearance-of-the-free-range-childhood/

136•sylvainkalache•8h ago•143 comments

A Dumb Introduction to Z3 (2025)

https://ar-ms.me/thoughts/a-gentle-introduction-to-z3/

55•y1n0•4d ago•23 comments

Towards trust in Emacs

https://eshelyaron.com/posts/2026-04-15-towards-trust-in-emacs.html

165•eshelyaron•3d ago•25 comments

The simple geometry behind any road

https://sandboxspirit.com/blog/simple-geometry-of-roads/

109•azhenley•2d ago•12 comments

Building a Grow-Only Counter on a Sequentially Consistent KV Store

https://brunocalza.me/blog/2026/04/13/building-a-grow-only-counter-on-a-sequentially-consistent-k...

4•brunocalza•5d ago•0 comments

Open in hackernews

Understanding the FFT Algorithm (2013)

https://jakevdp.github.io/blog/2013/08/28/understanding-the-fft/

19•peter_d_sherman•3d ago

Comments

medbar•1h ago

For anyone interested and with 30 minutes to spare, I would recommend the youtube video [1] by Reducible for an intuition on how FFT works.

[1]: https://youtu.be/h7apO7q16V0

vscode-rest•1h ago

A bit of a stretch, but does anyone have a good way of running an FFT on a pcap?