Incoming links: LibreTexts
Exist because double bonds don't rotate freely. Have different properties of course, unlike enantiomer.
In this section we list charitable organizations that support education or research:
- elifesciences.org/labs by eLife
- www.digital-science.com/investment/catalyst-grant/ by Shuttleworth Foundation.
- en.wikipedia.org/wiki/PLOS
- www.chanzuckerberg.com/ Zuck has already invested in education previously:
- openuk.uk/
- Hmm, some/all of it is a copy of LibreTexts but with URLs shorter than a million characters, e.g.:
- Sir Peter Lampl, Education Endowment Foundation and Sutton Trust
- Jacobs Foundation, by German-Swiss coffee mogul Klaus Johann Jacobs
- joint-research-centre.ec.europa.eu/what-open-education_en
- www.non-trivial.org/ "Launch Your Own Impactful Project CHOOSE YOUR CAUSE. GET EXPERT GUIDANCE. FIND A SOLUTION AND MAKE IT HAPPEN."
- by United States Government:
- FY 2024 Education Innovation and Research:
- Education Innovation and Research (EIR) Notices Inviting Applications
- oese.ed.gov/offices/office-of-discretionary-grants-support-services/innovation-early-learning/education-innovation-and-research-eir/fy-2024-competition/
- www.federalregister.gov/documents/2024/05/06/2024-09797/applications-for-new-awards-education-innovation-and-research-eir-program-early-phase-grants
- FY 2024 Education Innovation and Research:
Introductory Quantum Mechanics by Richard Fitzpatrick (2020) Updated 2025-02-22 +Created 1970-01-01
This LibreTexts book does have some interest!
An ion selective electrode is tool used in analytical chemistry used to determine the concentration of a given ion in a solution.
The method can determine the concentration of one ion even if there are multiple different types of ion in the solution, although in some cases this can alter the results. This is done with the help of a selective membrane that only allows certain ions through.
One cool example application mentioned on LibreTexts[ref] is the measurement of fluorine concentration in water. They explain that fluorine is added to the drinking water supply in some countries to help protect people's teeth, and so you want to be able to measure as part of quality control to make sure it is being added in correct the quantities.
The method requires calibrating with calibrating solutions which takes one hour, but once you are calibrated you just stick the sensor into the analyte and get readings in a minute without any expendables. The membrane seems to be a bit fragile which requires care, but overall it looks like a convenient method.
Ion selective electrode schematic
. Source. 
Sample calibration curve for an ion selective electrode
. Source. The curve is simple and log linear, so once you have that it is easy to fit new measurements to the curve.Ion selective electrodes Tech Tips by Vernier
. Source. The plump Asian American lady with a PhD explains how to use the thing.
It seems like a proprietary training video given with the product that this Peruvian university decided to upload to YouTube. Heroes.
Using an Ion Selective Electrode by University of Alberta
. Source. Some possible/not possible sources that could be used to manually bootstrap content:
- LibreTexts. Good project. "Teacher-only-content" unfortunately as usual. But besides that fundamental flaw, they do exactly what we want to do in a sense.
- OpenStax: CC BY. This could be a great entry point, as they already have some university integration going on, and might be interested in this project.
- physics.stackexchange.com/questions/6157/list-of-freely-available-physics-books "List of freely available physics books" explicitly asks for:but the thread was locked, and basically none of the sources in the answers have free licenses, nor do they note it. It just seems that the physicists don't know what a free license is.
a list of physics books with open-source licenses, like Creative Commons, GPL
- MIT OpenCourseWare: CC BY-NC-SA, so not really usable
- github.com/certik/theoretical-physics: MIT License. Workable but wonky.
- subwiki.org/: wiki with some upper graduate math subjects presumably by this Indian dude: www.linkedin.com/in/vipul-naik-0ab1898/. Description on his homepage: vipulnaik.com/subwiki/. He's also got other interesting but not so relevant projects:He's also into Stack Overflow, Quora and Wikipedia editing. That's a cool dude. He's into in LessWrong it seems.
- pro freer immigration laws: vipulnaik.com/openborders/
- vipulnaik.com/cognito-mentoring/ free mentoring project for interested students
- massive mathematics books
- Infinite Napkin.CC BY-SA mathematics infinite book: github.com/vEnhance/napkin/issues/77. Very similar type of content to what we want in this project!
- Stacks Project
Existing lecture notes by students:
- github.com/mb2g17/NotesNetworkArchive Google Docs-based: docs.google.com/document/d/1OIcQ8dJ_FAhdkirU94M29-ZbNZ4oQs1LbWF3Nz-mq_U/edit#heading=h.vehxib58w1iw. An actual student uploading tons of lecture notes in one coherent system. CC BY-NC-SA unfortunately.
- academia.stackexchange.com/questions/148261/do-you-keep-your-study-notes-publicly-available mentions:Related: academia.stackexchange.com/questions/40381/how-common-is-it-that-professors-have-their-students-write-textbooks
- Cambridge Mathematics Lecture Notes by Dexter Chua (2014-2018)Comments:
Lecture note upload website:
- nexusnotes.com likely illegal reuploads of PDFs from teachers
- www.studocu.com/en-gb Paywall. PDF uploads. Unclear if simple teacher reuploads or actual novel notes.
- www.studydrive.net/
- Chinese GitHub repos. Some of these are very advanced in terms of content quantity and organizational quality! The Chinese are miles ahead in this area:
- github.com/PKUanonym/REKCARC-TSC-UHT Guidance for courses in Department of Computer Science and Technology, Tsinghua University. Chinese. Appears to try and store all past exams.
- github.com/lib-pku/libpku
- github.com/openwhu/OpenWHU: Wuhan University
- github.com/USTC-Resource/USTC-Course: USTC
- github.com/Zeal-L/UNSW: UNSW from Australia, but by a Chinese dude
- github.com/apachecn/mit-18.06-linalg-notes: translation of MIT course to Chinese
- github.com/chenyang1999/MyComputerCollegeCourses: TODO which univeresity
- github.com/elder-frog/OpenCourseCatalog: nothing to do with this project, but since I'm making a list, this dude is copying YouTube videos to Bilibili. And he's edgy anti-CCP on Twitter, what a legend.
- github.com/TheBloodthirster/BUAA_Course_Sharing: en.wikipedia.org/wiki/Beihang_University
- github.com/1051727403/SHU-CS-Source-Share: ShangHai University CS course source code
- github.com/Willie169/tw-gifted-k12-notes: Taiwanese high school notes
Exams uploads:
- questions.tripos.org/part-ib/all/ University of Cambridge Mathematics past examinations
Technique to solve partial differential equations
Naturally leads to the Fourier series, see: solving partial differential equations with the Fourier series, and to other analogous expansions:
One notable application is the solution of the Schrödinger equation via the time-independent Schrödinger equation.