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nbernard commented on Albert Michelson's Harmonic Analyzer (2014) [pdf]   engineerguy.com/fourier/p... · Posted by u/o4c
RossBencina · 14 days ago
Awesome. I'd love to know more about instrument making techniques of the era -- especially for precisely calibrated analog computing applications like this. I know that by the 1890s machine tools were commercially available (e.g. Brown and Sharpe Manufacturing were incorporated in 1868 and were operating earlier[1, preface]) but presumably precision instrument makers evolved from clockmakers -- using hand tool techniques perfected much earlier. (Obligatory link to ClickSpring [2])

[1] https://archive.org/details/practicaltreati00cogoog/page/n8/...

[2] https://www.youtube.com/watch?v=dRXI9KLImC4&list=PLZioPDnFPN...

nbernard · 14 days ago
Not exactly what you are looking for, but you may still want to take a look at Moore's /Foundations of Mechanical Accuracy/. IIRC, it contains a section on the evolution of machining since the early 1800s and covers the transition between the making of parts made to fit together, to parts made to specs.

BTW, in later parts of the book, Michelson appears as interferometry is used to check the accuracy of parts.

nbernard commented on Ask HN: Advice for creating a USB device linking 2 computers    · Posted by u/WorldDev
nbernard · 2 months ago
Probably not the cheapest nor the easiest way, but take a look at Cynthion: https://greatscottgadgets.com/cynthion/

On the hardware side, it probably has what you need (and more).

nbernard commented on Alibaba cloud FPGA: the $200 Kintex UltraScale+   essenceia.github.io/proje... · Posted by u/signa11
rkagerer · 2 months ago
54 sold, 3 left
nbernard · 2 months ago
And now... 59 sold, more than 10 available!
nbernard commented on Ask HN: Do people lose interest in TeX/LaTeX after leaving academia?    · Posted by u/amichail
DeepSeaTortoise · 3 months ago
No offense, but an org-mode user's opinion about Latex is about equivalent to a Masochist's opinion on letting your child play with Lego in the living room.
nbernard · 2 months ago
None taken! :)
nbernard commented on NFS at 40 – Remembering the Sun Microsystems Network File System   nfs40.online/... · Posted by u/signa11
jjtheblunt · 2 months ago
What happened to Transarc's DFS ?

I looked, found the link below, but it seems to just fizzle out without info.

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

Anyway, we used it extensively in the UIUC engineering workstation labs hundreds of computers, 20+ years ago, and it worked excellently. I set up a server farm 20 years ago of Sun sparcs but used NFS for such.

nbernard · 2 months ago
AFS (on which DFS was based) lives on as OpenAFS [0]. And there is a commercial evolution/solution from AuriStor [1].

[0]: https://openafs.org/

[1]: https://www.auristor.com/filesystem/

nbernard commented on Alibaba cloud FPGA: the $200 Kintex UltraScale+   essenceia.github.io/proje... · Posted by u/signa11
rkagerer · 3 months ago
Lots still available on eBay https://www.ebay.com/itm/167626831054

I guess there aren't any GPIO's wired up to headers or such? Any suggestions on a project for it that's a good fit?

nbernard · 2 months ago
> Lots still available on eBay

Probably not for long: only 7 available now...

nbernard commented on Ask HN: Do people lose interest in TeX/LaTeX after leaving academia?    · Posted by u/amichail
nbernard · 3 months ago
Left academia, still using LaTeX for about every document (not counting org-mode documents for my own use).

At this point, using "common" text processors (Word, Writer, ...) still (?) feels like torture.

nbernard commented on Typst: A Possible LaTeX Replacement   lwn.net/Articles/1037577/... · Posted by u/pykello
setr · 3 months ago
Text editors progress one funeral at a time.
nbernard · 3 months ago
Scientific text editors, you mean? ;)

I suspect it is actually worse than that and that they are actually subject to the Lindy effect ( https://en.wikipedia.org/wiki/Lindy_effect ).

nbernard commented on Typst: A Possible LaTeX Replacement   lwn.net/Articles/1037577/... · Posted by u/pykello
benrutter · 3 months ago
> Almost nobody wants to learn something new when they already know something similar.

I think it depends on what the thing is. I use LaTeX for occasional documentation, a better version would save me a maximum of 5 minutes a year. I probably won't be an early Typst adopter.

But, I spend loads of time for example, working with dataframes in Python. I got into Polars fairly early because improvements in that space can massively affect my productivity.

If you're routinely using LaTeX to write papers, the time spent learning something new isn't comparably large.

nbernard · 3 months ago
> If you're routinely using LaTeX to write papers, the time spent learning something new isn't comparably large.

I don't know. By then aren't you quite comfortable with LaTeX?

It may be Stockholm syndrome and sunk costs speaking, but I'm using LaTeX all the time: I quite like it and I don't feel any need for something else to replace it...

u/nbernard

KarmaCake day435August 16, 2009View Original