Google Analytics Updated 2025-07-16
I need this for OurBigBook.com!! webmasters.stackexchange.com/questions/104241/can-google-analytics-track-url-fragment-in-url
They removed referrer path completely in GA4... OMG WTF are they doing!
Google custom silicon Updated 2025-07-16
Google has put considerable effort into custom hardware to greatly optimize its stack, in a way that is quite notable compared to other tech companies.
- 2021 www.theregister.com/2021/03/23/google_to_build_server_socs/ Google vows to build its own server system-on-chips, hires Intel veteran. Inevitable with the end of Moore's law. Instruction set architecture unannounced however. I'll bet ARM instruction set
- 2021 codec acceleration for YouTube: www.tomshardware.com/uk/news/intel-replaces-xeons-with-custom-vcus
Gradient, Divergence, Curl, and Laplacian Updated 2025-07-16
Graphical user interface Updated 2025-07-16
Greatest common divisor Updated 2025-07-16
The "greatest common divisor" of two integers and , denoted is the largest natural number that divides both of the integers.
Greek alphabet Updated 2025-07-16
Unfortunately, physicists and mathematicians keep using Greek letters in their formulas, so we just have to learn them.
A helpful way to remember is to learn a bit of their history/pronunciation: Section "Historical correspondence between Latin and Greek".
To learn the greek letters if you have a base latin alphabet, you must learn the sound of each letter, and which Latin letters they correspond to.
Symbols that look like Greek letters but are not Greek letters:
Is Ciro Santilli crazy (he is, but for this point specifically), or do many/most Greek letters represent the mouth position used in the pronunciation of the letter?
Gross hydrogen emission spectrum Updated 2025-07-16
One reasonable and memorable approximation excluding any fine structure is:see for example example: hydrogen 1-2 spectral line.
Equation 1.
Hydrogen spectral series mnemonic
. Group of American universities Updated 2025-07-16
Growth medium Updated 2025-07-16
How to use an Oxford Nanopore MinION to extract DNA from river water and determine which bacteria live in it External links to this page Updated 2025-07-16
- 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
Guitar Updated 2025-07-16
The guitar is a highly imperfect instrument if compared to something like a piano, which is much more mathematically elegant.
However, Ciro Santilli just loves this imperfection for some reason, especially in the case of the electric guitar.
Guqin Updated 2025-07-16
Stringless guqin fan painting by Feng Chaoran (1943)
Stolen traight from www.silkqin.com/10ideo.htm on silkqin.com:Wind in the pines and a babbling brook are nature's melody. A qin was brought along, but there is no need to play it
Hamilton's equations Updated 2025-07-16
Analogous to what the Euler-Lagrange equation is to Lagrangian mechanics, Hamilton's equations give the equations of motion from a given input Hamiltonian:So once you have the Hamiltonian, you can write down this system of partial differential equations which can then be numerically solved.
Hanford site Updated 2025-07-16
The B Reactor of the facility produced the plutonium used for Trinity and Fat Man, and then for many more thousand bombs during the Cold War. More precisely, this was done at
Located in Washington, in a dry place the middle of the mountainous areas of the Western United States, where basically no one lives. The Columbia river is however nearby, that river is quite large, and provided the water needed by their activities, notably for cooling the nuclear reactors. It is worth it having look on Google Maps to get a feel for the region.
Unlike many other such laboratories, this one did not become a United States Department of Energy national laboratories. It was likely just too polluted.
Bibliography:
Aerial image of the Hanford site in 1960
. Source. 
Hans Petter Langtangen Updated 2025-07-16
GitHub account: github.com/hplgit
It should be mentioned that when you start Googling for PDE stuff, you will reach Han's writings a lot under his GitHub Pages: hplgit.github.io/, and he is one of the main authors of the FEniCS Project.
He also published to GitHub pages with his own crazy markdown-like multi-output markup language: github.com/hplgit/doconce.
Rest in peace, Hans.
Harvard University Updated 2025-07-16
How to diagnose a genius by Wilhelm Ostwald (1909) Updated 2025-07-16
From the abstract:Ciro Santilli couldn't agree more... notably students must have a flexible choice of what to learn.
Much money, his student went on to say, is spent by various Governments in attempting to discover those people whose thorough education may be expected to bring in a return of value to the State, and the question how best to discover latent genius is an eminently practical one. After cogitation, Prof. Ostwald came to the conclusion that it is those students who cannot be kept on the rails - that is, who are not contented with methodical teaching - who have within them the seeds of genius
How to exit from repl in rshell? Updated 2025-07-16
Ctrl + X. Documented by running
help repl from the main shell. How to make animations of molecular biology processes Updated 2025-07-16
Unlisted articles are being shown, click here to show only listed articles.