The most practical/precise volt standard.
It motivated the definition of the ampere in the 2019 redefinition of the SI base units
The wiki page en.wikipedia.org/wiki/Josephson_voltage_standard contains amazing schematics of the device, apparently made by the US Government.
Schematic of a typical Josephson voltage standard chip
. Source. 
The evolution of voltage metrology to the latest generation of JVSs by Alain Rüfenacht
. Source. Talk given in 2023. The speaker is from NIST, and the talk was hosted by the BIPM. Fantastic talk.- youtu.be/VoRab8U2eS0?t=354 the desired output voltage is 10V
- youtu.be/VoRab8U2eS0?t=475 lists the three most commonly used 10V implementations currently:
Technical aspects of realizing the DC volt in the laboratory with a JVS by Stéphane Solve
. Source. Talk given in 2023. The speaker is from BIPM, and the talk was hosted by the BIPM. Fantastic talk.- youtu.be/6pgGNJby1lw?t=296 gives the experimental setup used to compare two different references. Notably it involves a nanovoltmeter
List of the sub-journals at: journals.aps.org/browse
- 2020: Traininum in 2020, e.g. techcrunch.com/2020/12/01/aws-launches-trainium-its-new-custom-ml-training-chip/
- 2018: AWS Inferentia, mentioned at en.wikipedia.org/wiki/Annapurna_Labs
Parsa's Age of Empires II Cartoons (2021)
Source. The cutest fan art ever!This means that e.g. if you do an
UPDATE query on multiple rows, and power goes out half way, either all update, or none update.This is different from isolation, which considers instead what can or cannot happen when multiple queries are running in parallel.
Los Alamos From Below by Richard Feynman (1975) by 
Ciro Santilli 35 Updated 2025-01-10 +Created 1970-01-01
Ciro Santilli 35 Updated 2025-01-10 +Created 1970-01-01Amazing talk by Richard Feynman that describes his experiences at Los Alamos National Laboratory while developing the first nuclear weapons.
Transcript: calteches.library.caltech.edu/34/3/FeynmanLosAlamos.htm Also included full text into Surely You're Joking, Mr. Feynman.
- www.youtube.com/watch?v=uY-u1qyRM5w&t=2881s describes the computing aspects. Particularly interesting is the quote about how they used the typist secretary pool to emulate the IBM machines and debug their programs before the machines had arrived. This is exactly analogous to what is done in 2020 in the semiconductor industry, where slower models are used to estimate how future algorithms will run in future hardware.
Los Alamos From Below by Richard Feynman (1975)
Source. The World Of Enrico Fermi by Harvard Project Physics (1970) by Ciro Santilli 35 Updated 2025-01-10 +Created 1970-01-01
Ciro Santilli 35 Updated 2025-01-10 +Created 1970-01-01The World Of Enrico Fermi by Harvard Project Physics (1970)
Source. - css/code-block.html
- css/img-table-vertical-center.html
- css/viewport-height.html: a div that is a tall as the viewport, and does not generate a toplevel scrollbar
- css/responsive-image-max-height.html: here we try to create an image that is never wider than the screen. If the screen is less wide than the image, then the image scales down proportionally. Otherwise, the image has a user determined fixed by the CSS or the HTML
heightproperty. Related:TODO I'm unable to do this....... stackoverflow.com/questions/69964332/how-to-set-the-default-height-of-responsive-images-when-screen-is-wide-and-have The objective was to implement: github.com/ourbigbook/ourbigbook/issues/168 - css/top-navigation.html
The wave equation can be seen as infinitely many infinitesimal coupled oscillators by Ciro Santilli 35 Updated 2025-01-10 +Created 1970-01-01
Ciro Santilli 35 Updated 2025-01-10 +Created 1970-01-01TODO confirm, see also: coupled oscillators. And then this idea can be used to define/motivate quantum field theory in terms of quantum harmonic oscillators with second quantization.
- youtu.be/SMmFgIEGYtw?t=324 Quantum Field Theory 2a - Field Quantization I by ViaScience (2018)
Ice is the name of one of the solid phases of water.
In informal contexts, it usually refers to the phase of ice observed in atmospheric pressure, Ice Ih.
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