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dskhatri

Re:How Japanese Dried Bonito Is Made on Sunday October 25, 2026 @06:17PM (#50236571)
Curious why they painstakingly arranged the frozen bonito into the truck, only to then toss them into the water at the destination. Why not just empty the cart into the truck instead of manually transferring the fish one at a time?
Also interesting is the bolas spider which as its name suggests swings a bolas to capture moths midair. The bolas spider is also remarkable in that it can emit pheromones to target specific species of moths..

https://en.wikipedia.org/wiki/Bolas_spider

Re:You Can Just Buy Far-UVC on Thursday January 15, 2026 @01:51AM (#46628978)
I am not convinced a single lamp placed over the dining table would provide sufficient irradiance to inactivate viruses and other pathogens in the large room. Consider having an infected individual sneeze or cough at the table. The expiration jet would spread so rapidly. This lamp is like a tiny flashlight placed above the dining table. Furthermore, far UV gets absorbed by oxygen in the air. The net irradiance of far uv is worse than 254 nm at a fixed distance from two equivalent (in power and form) sources.

The lamp would be effective if you were able to quickly circulate the air in the room past the lamp.

It is wild that the founders have very little experience in the space, and that their claims are based on sparse research. That said, the Substack article doesn't seem any more credible. Other than the name DC Fusion LLC, I missed any indications that the founder was working on a fusion startup. The article correctly identifies as an opinion piece but doesn't seem worthy of credible referencing.
Re:Meta Ray-Ban Display on Wednesday September 17, 2025 @10:38PM (#45284532)
Someone help me understand why the Ray-Ban branding? Meta should be able to make the frames themselves. Ray-Ban doesn't seem to be a strong enough brand that Meta couldn't go it solo and build a glasses brand themselves.
Re:Show HN: Tiny logic and number games I built for my kids on Wednesday August 06, 2025 @02:33PM (#44815829)
I'm a debut author and not established by any means. I do have marketing experience and can provide the following suggestions:

+ Put all apps and books under one umbrella brand. Your book doesn't have a unique name associated with it. Little Math Genius or Little Math Whiz, for example.

+ Setup an umbrella website (littlemathwhiz dot com) and blog

+ Start aggregating a user mailing list where you can provide gentle updates (beta test new features on quizmathgenius, new book announcement etc)

Nice work. I like the simple, unobtrusive and ad-free interface. I have kids who could use this although you face lots of competition for their very limited allotted active screen time [1]. The 6 yo gets 45 mins a week on the computer, usually opting for PBSkids, Kodable or Scratch. The 3 yo gets 15 mins usually opting for guided digital canvas painting as she learns to use a mouse.

There are a few good no-screen puzzle books for kids (lookup the ones by Usborne).

As a recent publisher of an interactive children's book [2], I am seeing more sales of the physical books than the digital/web editions despite the latter having more features including an element of teaching math.

Curious if you considered publishing a physical book with these concepts/math puzzles?

[1] This app inspires me to upgrade some of their passive screen time (TV) to more of your and similar apps

[2] https://tendollaradventure.com

Re:Ferroelectric Helps Break Transistor Limits on Saturday August 02, 2025 @10:21AM (#44767852)
So with any conventional transistor including the GaN HEMT, the input/gate capacitance must be charged in order for the transistor to turn on. The turn on and off (discharging the input and the output capacitance) is predictable, and is the job of a gate driver integrated circuit.

It appears to me that while the effective input capacitance is reduced with HZO, the gate driver would need to be special to deal with the changing capacitance.

The article implies that the Berkeley team has been researching the use of feroelectrics in Si devices for 20 years. Are there Si mosfets in production with this material on the gate?

Thanks! Story images in Google Whisk with lots of editing in GIMP. Vectors (achievement stickers) in Inkscape.
Thank you! I have been an Emacs user/consumer for many years. This project finally got me into the proverbial weeds, a fun venture, learning elisp, exploring the Org code base especially around the export backends [1]. It was useful going through the one.el source code as well, and I now write my blog in Emacs, rendering it using this package [2].

[1] https://github.com/emacs-mirror/emacs/blob/master/lisp/org/o... [2] https://github.com/tonyaldon/one.el

Ink looks iteresting! Twinery provides a nice visual editor for the passages and branches which I found appealing. Ultimately, I used Mermaid to create visual snapshots of the story which were useful when editing the physical book.

Show HN: A 'Choose Your Own Adventure' written in Emacs Org Mode

https://tendollaradventure.com/sample/

I authored and developed an interactive children's book about entrepreneurship and money management. The journey started with Twinery, the open-source tool for making interactive fiction, discovered right here on HN. The tool kindled memories of reading CYOA style books when I was a kid, and I thought the format would be awesome for writing a story my kids could follow along, incorporating play...

( Read More... | 25 comments | 42 points | on HN )
Some of the graphics indicate a contiguous building but it makes no sense to be constructed that way. The footprint probably includes power generation, power conversion, cooling systems, and compute centers as distinct blocks/buildings within the site.
Thank you! I will attempt to share the technical details of the implementation there.
I've been in love with Emacs and Org Mode for over a decade mostly as a user, only writing basic Elisp in my .emacs initialization file. Writing this book made me even more enamored with Emacs as I learned to write a few packages, and spent much time browsing the Org source code, especially around the export engine [1]. It was useful going through one.el source code as well [2]

[1] https://github.com/emacs-mirror/emacs/blob/master/lisp/org/o... [2] https://github.com/tonyaldon/one.el

And, thank you!

Show HN: An interactive kids' book written in Emacs Org Mode

I authored and developed an interactive fiction book in Emacs using Org mode and Twinery. Read an entire storyline/adventure of the Web Book, no login required here: https://tendollaradventure.com/sample/---I authored and developed an interactive children's book about entrepreneurship and money management. The journey started with Twinery, the open-source tool for making interactive fiction,...

( Read More... | 5 comments | 2 points | on HN )

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