#video showing how a transparent #geyser-pump works, part 1 of 3. #airlift #mechanisms
#video showing how a transparent #geyser-pump works, part 2 of 3. #airlift #mechanisms
#video showing how a transparent #geyser-pump works, part 3 of 3. #airlift #mechanisms
#video showing a very easy construction technique for #geyser-pump #mechanisms using a couple of plastic bottles and a tube. #airlift
#video showing the difference between #geyser-pump #mechanisms and conventional pneumatic ejector pumps #airlift
Auction of Paul Allen’s LCM+L (Living Computer Museum & Labs) assets, including four PDP-10s. #history #retrocomputing
really interesting #CC By #paper on “snapshottable stores” for things like backtracking on union-find using Lisp shallow-binding implementation techniques. Starts with a really nice abstraction of the union-find algorithm.
"C-Breeze" is a visitor-based C-to-C source translator for analyzing your source code or changing it.
how to do tables in #LaTeX: \begin{tabular}{| c c |} \hline a & b \\ c & d \hline \end{tabular}
#video on the Sharp #memory-LCD I have; Andrej reports that it works fine at 10 megahertz even though it’s only specced for 2. That’s 100fps!! #electronics #hardware
#video on #manufacturing SO₃ #materials #bootstrapping by #NurdRage. I didn’t know you could dehydrate H₂SO₄ with H₄P₂O₇! But he’s dehydrating it with Na₂S₂O₇ instead.
Christopher Mark and his research on mine safety and structural analysis, along with the #history of #mining regulation in the #USA
The CP/M #filesystem structure has one 32-byte directory entry for each “extent” of up to 16 kibibytes, allocated in units of 1024 bytes or more. #retrocomputing #CPM
CP/M eventually added more features to its #filesystem. #retrocomputing #CPM
CP/M floppy disk formats; the 5¼" standard was 35–40 tracks, 18 sectors per track, 128 bytes per sector, but, “You could go from 18 x 128 byte sectors to 10 x 512 byte sectors.” #retrocomputing #CPM
#video of part of Ann Hardy’s oral #history #interview with the Computer History Museum, covering the history of Tymshare through the late 01960s to the early 01980s
Raymond Chen on how optimization for #performance can be counterintuitive in, for example, the presence of return-address caching for branch prediction
#video about whether #Milei’s plan is working from #Bloomberg. Basically the reporting is extremely positive, I think unrealistically so. #politics #Argentina
#video #toread about a YouTuber returning to his home in #Argentina
the #Forth 83 standard (ASCII, 89 pages)
#PDF #paper from Dewar on “Indirect Threaded Code” from CACM June 01975
Don Lavoie #paper on the origins of “The Agorics Project” at GMU