Weak interaction Updated 2025-07-16
Explains beta decay. TODO why/how.
Maybe a good view of why this force was needed given beta decay experiments is: in beta decay, a neutron is getting split up into an electron and a proton. Therefore, those charges must be contained inside the neutron somehow to start with. But then what could possibly make a positive and a negative particle separate?
- the electromagnetic force should hold them together
- the strong force seems to hold positive charges together. Could it then be pushing opposite-charges apart? Why not?
- gravity is too weak
www.thestargarden.co.uk/Weak-nuclear-force.html gives a quick and dirty:Also interesting:
Beta decay could not be explained by the strong nuclear force, the force that's responsible for holding the atomic nucleus together, because this force doesn't affect electrons. It couldn't be explained by the electromagnetic force, because this does not affect neutrons, and the force of gravity is far too weak to be responsible. Since this new atomic force was not as strong as the strong nuclear force, it was dubbed the weak nuclear force.
While the photon 'carries' charge, and therefore mediates the electromagnetic force, the Z and W bosons are said to carry a property known as 'weak isospin'. W bosons mediate the weak force when particles with charge are involved, and Z bosons mediate the weak force when neutral particles are involved.
Weak Nuclear Force and Standard Model of particle physics by Physics Videos by Eugene Khutoryansky (2018)
Source. Some decent visualizations of the field lines. E. Coli K-12 MG1655 promoter thrLp Updated 2025-07-16
Fock space Updated 2025-07-16
John Archibald Wheeler Updated 2025-07-16
Richard Feynman's mentor at Princeton University, and notable contributor to his development of quantum electrodynamics.
Worked with Niels Bohr at one point.
Web of Stories interview (1996): www.youtube.com/playlist?list=PLVV0r6CmEsFzVlqiUh95Q881umWUPjQbB. He's a bit slow, you wonder if he's going to continute or not! One wonders if it is because of age, or he's always been like that.
John von Neumann Updated 2025-07-16
This is the one Ciro Santilli envies the most, because he has such a great overlap with Ciro's interests, e.g.:
John von Neuman - a documentary by the Mathematical Association of America (1966)
Source. Some good testimonies. Some boring. Jordan Peterson's university online Updated 2025-07-16
My online university and why it is needed interview with Jordan Peterson (2018)
Source. Cheaper and online. Initial focus on social sciences. Cyrillic script Updated 2025-07-16
Dean Kamen Updated 2025-07-16
Decimal day Updated 2025-07-16
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.
Superintelligence by Nick Bostrom (2014) Updated 2025-07-16
Good points:
- Post mortem connectome extraction with microtome
- the idea of a singleton, i.e. one centralized power, possibly AGI-based, that decisivly takes over the planet/reachable universe
- AGI research has become a taboo in the early 21st century section "Opinions about the future of machine intelligence"
Step response of the series RC circuit Updated 2025-07-16
Super Smash Bros AI Updated 2025-07-16
Surely You're Joking, Mr. Feynman chapter O Americano, Outra Vez! Updated 2025-07-16
Suspension of disbelief Updated 2025-07-16
SVG background color Updated 2025-07-16
Examples at svg/background.html which answers from stackoverflow.com/questions/11293026/default-background-color-of-svg-root-element/11293812:
- svg/background-rect.svg
- svg/background-viewport-fill.svg: was part of SVG 1.2, but that whole standard got dropped. Not implemented neither in Chromium 85 nor Firefox 93 as of 2021.
This pain reflects directly on Inkscape: set SVG background color in Inkscape.
Sycamore processor Updated 2025-07-16
.jpg){kind=link}
Theodicy Updated 2025-07-16
Diablo II Updated 2025-07-16
Universal Chess Interface Updated 2025-07-16
Unlisted articles are being shown, click here to show only listed articles.