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August 11, 2021 Archives
Wednesday, August 11, 2021
CONTINUITY: Repairing a Hewlett-Packard 7475A Pen Plotter with a 3D Printed Part
The program referred to in the narration as “Inkspace” is actually “Inkscape”, a free multi-platform vector graphics editor.
Posted at
12:47
TRACKING WITH CLOSEUPS: Landing a Helicopter on a Pitching Deck
I wonder if after touching down the pilot uses the collective to produce down-thrust to “stick” the wheels to the deck.
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12:18
CONTINUITY: Heavy Water, Norsk Hydro, and the Telemark Raids
Here is more about the World War II Norwegian heavy water sabotage raids.
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11:46
TRACKING WITH CLOSEUPS: Nanometre-Scale Turing Patterns in Bismuth Crystals
"The mechanism behind leopard spots and zebra stripes also appears to explain the patterned growth of a bismuth crystal, extending Alan Turing’s 1952 idea to the atomic scale." via @QuantaMagazine https://t.co/xoU7pJYnXZ
— Quantum Gravity Res. (@emergencetheory) August 10, 2021
Alan Turing's work on morphogenesis, culminating in his 1952 paper, “The Chemical Basis of Morphogenesis”, is less known than his contributions to computing and cryptography, but remains the foundation for understanding the spontaneous formation of patterns in nature. Here is an apparent example of emergence of Turing patterns in an inorganic system without explicit activators, inhibitors, or diffusion.
Turing's investigation of morphogenesis is the jumping off point for Rudy Rucker's zany 2019 on-the-road novel, Turing and Burroughs.
Posted at
11:17
CONTEXT: A Volcano in the Back Yard—Visiting the Site of the 2018 Hawaii Eruption
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10:48