André-Marie Ampère Updated +Created
Electrical cable Updated +Created
One more more electrical wires surrounded by an insulator.
Oliver Heaviside Updated +Created
He participated in the development of the electrical telegraph, and he did some good modeling work that improved the foundations of the field, notably creating the telegrapher's equations.
He was one of those idealists who just want to do some cool work even if they have to starve for it, people had to get a state pension for him for his contributions. Nice guy. en.wikipedia.org/w/index.php?title=Oliver_Heaviside&oldid=1230097796#Later_years_and_views:
In 1896, FitzGerald and John Perry obtained a civil list pension of £120 per year for Heaviside, who was now living in Devon, and persuaded him to accept it, after he had rejected other charitable offers from the Royal Society.
He also never married: www.nndb.com/people/627/000204015/
We intersect 2013 DNS Census virtual host cleanup with 2013 DNS census MX records and that leaves 460k hits. We did lose a third on the the MX records as of 260 hits since secureserver.net is only used in 1/3 of sites, but we also concentrate 9x, so it may be worth it.
Then we Wayback Machine CDX scanning. it takes about 5 days, but it is manageale.
We did a full Wayback Machine CDX scanning for JAR, SWF and cgi-bin in those, but only found a single new hit:
Emotion Updated +Created
Pin header Updated +Created
These often come pre-soldered on devboards, e.g. and allow for easy access to GPIO pins. E.g. they're present on the Raspberry Pi 2.
Why would someone ever sell a devboard without them pre-soldered!
Figure 2.
Underside of a Raspberry Pi 2
. Source. At the top of this image we can clearly see how the usually pre-soldered pin header connectors go through the PCB and are soldered on both sides.
Quantum superposition Updated +Created
Quantum superposition is really weird because it is fundamentally different than "either definite state but I don't know which", because the superposition state leads to different measurements than the non-superposition state.
Examples:
Polytechnique USB flash drives Updated +Created
~8GB, lsblk reports 7796176 * 1KB = 7983284224 bytes.
We got a handful of those from École Polytechnique at the end of studies I think.
They are shaped like bicornes, which is super cool, but also super impractical!
Markings: "AX ÉCOLE POLYTECHNIQUE PROMOTION X2009"
20.04 gnome-disks program reports it as: "SMI USB DISK".
From Ubuntu 20.04 on an ext4 formatted one:
/dev/sdb:
 Timing cached reads:   28656 MB in  1.99 seconds = 14421.31 MB/sec
SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 Timing buffered disk reads:  42 MB in  3.03 seconds =  13.88 MB/sec
With Linux Unified Key Setup + ext4 the results are similar, maybe hdparam bypasses it?
/dev/sdb:
 Timing cached reads:   28326 MB in  1.99 seconds = 14251.55 MB/sec
SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 Timing buffered disk reads:  38 MB in  3.11 seconds =  12.23 MB/sec
gnome-disks LUKS + ext4 benchmark with default params also gives about 14 MB/s.
Multilinear form Updated +Created
See form.
Analogous to a linear form, a multilinear form is a Multilinear map where the image is the underlying field of the vector space, e.g. .
B Reactor Updated +Created
Reactor of the Hanford site of the produced the plutonium used for Trinity and Fat Man.
This was the first full scale nuclear reactor in the world, and was brought up slowly to test it out.
Video 1.
Hanford B Reactor tour by Studio McGraw
. Source. 2016.
Pokemon Updated +Created
One of the main children cartoons Ciro Santilli liked to watch. Part of the Pokemon Mania of the 90s of course.
Ciro could not understand why Nintendo won't make a proper 3D MMORPG Pokemon with actually 3D Pokemon roaming the land, which is obviously what everyone wants. There are even fan games getting there!
until this explaiend it beautifully Video 1. "The Downfall Of Mainline Pokemon Games by GONZ media (2020)":
Figure 1.
Instead of risking anything new, let's play it safe by continuing our slow decline into obsolecense cartoon by Tom Fishburne
. Source.
Video 1.
The Downfall Of Mainline Pokemon Games by GONZ media (2020)
Source. Great video, explains things Ciro had never thought about, e.g. how the Nintendo Switch unified handheld and console for Nintento, this could open the doors for a more ambitious Pokemon release.
Ciro's everyone gets a raise story Updated +Created
Once upon a time, when Ciro worked at a company, one day the company decided to give everyone a 20% raise.
The likely reason was that Apple was coming to town, and was sucking the fuck out of the company's talent.
Nothing ever drove it so clearly into Ciro's heart the obvious fact that even for skilled jobs, companies don't pay you what you're worth. They pay you as little as possible so you won't quit to join someone else. It is pure market forces in play.
The annoying thing is that people are highly non-fungible, so much like painting auctions, you can only estimate your price by putting yourself on auction and seeing what people will pay for you, i.e. interviewing for new jobs.
Another point is that people have all sorts of stupid restrictions such as not wanting to work on certain areas for moral reasons, or not wanting to move away from a certain area they like. Companies will of course readily exploit such weakness to be able to pay less. Silly non-rational beings.
Condensed matter university course Updated +Created
Entropy Updated +Created
OK, can someone please just stop the philosophy and give numerical predictions of how entropy helps you predict the future?
The original notion of entropy, and the first one you should study, is the Clausius entropy.
Video 1.
The Unexpected Side of Entropy by Daan Frenkel
. Source. 2021.
Video 2.
The Biggest Ideas in the Universe | 20. Entropy and Information by Sean Carroll (2020)
Source. In usual Sean Carroll fashion, it glosses over the subject. This one might be worth watching. It mentions 4 possible definitions of entropy: Boltzmann, Gibbs, Shannon (information theory) and John von Neumann (quantum mechanics).
Multiplication Updated +Created
Transcription (biology) Updated +Created
Bristol (synthesizer) Updated +Created
Simulates vintage hardware synthesizers, and includes some pretty complex ones!
Aims to show an UI that looks exactly like the synthesizers in question.
For example for the Minimoog on Ubuntu 20.04:
sudo apt install bristol
startBristol -mini -alsa
This is a really good piece of software. You can search on YouTube how some classic synths, work, and the immediately start playing them!
Brownian motion Updated +Created
Small microscopic visible particles move randomly around in water.
If water were continuous, this shouldn't happen. Therefore this serves as one important evidence of atomic theory.
The amount it moves also quantitatively matches with the expected properties of water and the floating particles, was was settled in 1905 by Einstein at: investigations on the theory of the Brownian movement by Einstein (1905).
This suggestion that Brownian motion comes from the movement of atoms had been made much before Einstein however, and passed tortuous discussions. Subtle is the Lord by Abraham Pais (1982) page 93 explains it well. There had already been infinite discussion on possible causes of those movements besides atomic theory, and many ideas were rejected as incompatible with observations:
Further investigations eliminated such causes as temperature gradients, mechanical disturbances, capillary actions, irradiation of the liquid (as long as the resulting temperature increase can be neglected), and the presence of convection currents within the liquid.
The first suggestions of atomic theory were from the 1860s.
Tiny uniform plastic beads called "microbeads" are the preferred 2019 modern method of doing this: en.wikipedia.org/wiki/Microbead
Original well known observation in 1827 by Brown, with further experiments and interpretation in 1908 by Jean Baptiste Perrin. Possible precursor observation in 1785 by Jan Ingenhousz, not sure why he wasn't credited better.
Video 1.
Observing Brownian motion of micro beads by Forrest Charnock (2016)
Source.

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