Paraprasing a friend of Ciro Santilli:
Magic: The Gathering is like cocaine in card form.
Luckily, early teens Ciro Santilli was partly protected from this by Ciro Santilli's cheapness.
But Ciro distinctly remembers one day in his early teens that he couldn't sleep very well, and he got up, and the was decided that he would become the greatest Magic: The Gathering player who ever lived. Can you imagine the incredible loss that this would have been to humankind? And talk about the incredible lack of development opportunity present in poor countries, related:
In the context of wave-like equations, an open-boundary condition is one that "lets the wave go through without reflection".
This condition is very useful when we want to simulate infinite domains with a numerical method. Ciro Santilli wants to do this all the time when trying to come up with demos for his physics writings.
Here are some resources that cover such boundary conditions:
- www.asc.tuwien.ac.at/~arnold/pdf/graz/graz.pdf lots of slides
- hplgit.github.io/wavebc/doc/pub/._wavebc_cyborg002.html mentions them and gives a 1D formula. It mentions that things get complicated in 2D and 3D TODO why.The other page: hplgit.github.io/wavebc/doc/pub/._wavebc_cyborg003.html shows solution demos.
Funding:
- 2021-03-25: Oxford Nanopore Technologies retweeted this article, that's awesome!
- 2021: hackaday.com/author/wd5gnr1/ "SEQUENCING DNA FOR METAGENOMICS" by Al Williams (2021). This came after Ciro Santilli self promoted at: stackoverflow.blog/2021/02/03/sequencing-your-dna-with-a-usb-dongle-and-open-source-code/#comment-1411921
- liziyan1117.com/page/:All question PDFs are uploaded to that site. Solutions are scanned from paper notebooks.
These are my own solutions to selected problem sets and past papers of the Oxford MPhys course (Years 1-3) and the MMathPhys course from the years 2014 to 2018
From LinkedIn:I identify myself as a black lesbian, who is trapped inside an Asian straight man's body.
- pjcc.physics.ox.ac.uk/resources/notes | www.scribd.com/document/654784089/CP3-Notes-Toby-Adkins# are lectures by Toby Adkins is pointed to from Oxford Physics Joint Consultative Committee. But they are closed, i.e. require you to be in the oxford network, though not necessarily with an Oxford login. As of 2023, he was doing a postdoc: www.physics.ox.ac.uk/our-people/adkins in fusion energy.
Transaction retries are inevitable, as some sQL isolation levels
Doesn't seem to have any simple built-in mechanism?
Example: nodejs/sequelize/trigger_count.js
There is of course no built-in support for SQL TRIGGERs in Sequelize, but we can add our own: stackoverflow.com/questions/29716346/how-to-create-a-trigger-in-sequelize-nodejs/76215728#76215728
The normal navigation to them was paywalled, but the static files are served without login checks if you know their URL. One way to go about it is to search by prefix on the Wayback Machine: web.archive.org/web/*/https://www2.physics.ox.ac.uk/sites/default/files/contentblock/2011/06/03/*
The last handbooks we can find are 2020/2021, they might have move to a new more properly paywalled location after that year.
- 2020/2021:
- Year 1: www2.physics.ox.ac.uk/sites/default/files/contentblock/2011/06/03/y1-ug-handbook-2020-2021-final-47501.pdf
- Year 2: www2.physics.ox.ac.uk/sites/default/files/contentblock/2011/06/03/y2-ug-handbook-2020-2021-final-47495.pdf
- Year 3: www2.physics.ox.ac.uk/sites/default/files/contentblock/2011/06/03/y3-ug-handbook-2020-2021-final-47496.pdf
- Year 4: www2.physics.ox.ac.uk/sites/default/files/contentblock/2011/06/03/y4-ug-handbook-2020-2021-final-47497.pdf
- Physics and Philosophy: www2.physics.ox.ac.uk/sites/default/files/contentblock/2011/06/03/pphandbook-47524.pdf
- 2019/2020. They seem to have split the handbook up per year after some point.
- Year 1: www2.physics.ox.ac.uk/sites/default/files/contentblock/2011/06/03/y1-ug-handbook-2019-2020-final-8october2019-45541.pdf
- Year 2: www2.physics.ox.ac.uk/sites/default/files/contentblock/2011/06/03/y2-ug-handbook-2019-2020-final-8-october2019-45542.pdf
- Year 3: www2.physics.ox.ac.uk/sites/default/files/contentblock/2011/06/03/y3-ug-handbook-2019-2020-updated-21november2019-45955.pdf
- Year 4: www2.physics.ox.ac.uk/sites/default/files/contentblock/2011/06/03/y4-ug-handbook-2019-2020-final-8october2019-45544.pdf
- 2016/2017: www2.physics.ox.ac.uk/sites/default/files/2011-06-03/course_v3_pdf_80151.pdf 2022 archive: web.archive.org/web/20221229021312/https://www2.physics.ox.ac.uk/sites/default/files/2011-06-03/course_v3_pdf_80151.pdfThis older handbook had a more detailed course breakdown in terms of terms and weeks, e.g. on page 19.
Oxford Master Course in Mathematical and Theoretical Physics Updated 2025-01-10 +Created 1970-01-01
At least they have a fucking clear course schedule unlike the undergrad.
Good overgrown section in the middle of Fresnel's biography: en.wikipedia.org/w/index.php?title=Augustin-Jean_Fresnel&oldid=1064236740#Historical_context:_From_Newton_to_Biot.
Particularly cool is to see how Fresnel fully understood that light is somehow polarized, even though he did not know that it was made out of electromagnetism, clear indication of which only came with the Faraday effect in 1845.
spie.org/publications/fg05_p03_maluss_law:
At the beginning of the nineteenth century the only known way to generate polarized light was with a calcite crystal. In 1808, using a calcite crystal, Malus discovered that natural incident light became polarized when it was reflected by a glass surface, and that the light reflected close to an angle of incidence of 57° could be extinguished when viewed through the crystal. He then proposed that natural light consisted of the s- and p-polarizations, which were perpendicular to each other.
Matches the quantum superposition probability proportional to the square law. Poor Étienne-Louis Malus, who died so much before this was found.
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