Decimal day Updated 2025-07-16
Video 1.
Predecimal Currency: The Nightmare in Your Pocket by BritMonkey (2021)
Source.
Video 2.
Saltburn's Halfpenny Toll Bridge by BBC (1971)
Source. What they mean is one penny return, good clickbait though. Also the presenter is hot, that Nouvelle Vague feel.
Superfluid helium-3 Updated 2025-07-16
Surprisingly, it can also become a superfluid even though each atom is a fermion! This is because of Cooper pair formation, just like in superconductors, but the transition happens at lower temperatures than superfluid helium-4, which is a boson.
aps.org/publications/apsnews/202110/history.cfm: October 1972: Publication of Discovery of Superfluid Helium-3 contains comments on the seminal paper and a graph which we must steal.
Good points:
This is what happens when you apply a step voltage to a series RC circuit: TODO graph.
In this chapter Richard Feynman talks about his experiences in Brazil.
"O Americano, Outra Vez!" means "The American, once again!" in Portuguese, which is what one of the samba school boss exclaimed when Feynman was not playing well his instrument, the frigideira, during a rehearsal.
Feynman really enjoyed Brazil's (and notably Rio's) stereotypical "take it easy and enjoy life" attitude.
SVG background color Updated 2025-07-16
This is a pain point as of SVG 1.1...
Examples at svg/background.html which answers from stackoverflow.com/questions/11293026/default-background-color-of-svg-root-element/11293812:
This pain reflects directly on Inkscape: set SVG background color in Inkscape.
Sycamore processor Updated 2025-07-16
This is a good read: quantumai.google/hardware/datasheet/weber.pdf May 14, 2021. Their topology is so weird, not just a rectangle, one wonders why! You get different error rates in different qubits, it's mad.
Figure 1.
Google Sycamore Weber quantum computer connectivity graph
. Weber is a specific processor of the Sycamore family. From this we see it clearly that qubits are connected to at most 4 other qubits, and that the full topology is not just a simple rectangle.
Theodicy Updated 2025-07-16
Diablo II Updated 2025-07-16
Grew tremendously since the 1990's, likely linked to the Internet.
TODO why is it so hard to find a proper cumulative distribution function-like curve? OMG. This appears to be also called a Lorenz curve.
Video 1.
Wealth Inequality in America by politizane
. Source.
Diacritic Updated 2025-07-16
Digital electronic computer Updated 2025-07-16
Unsurprisingly the term "computer" became a synonym for this from the 1960s onwards!

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