Alpha Centauri Updated 2025-07-16
Alpha decay Updated 2025-07-16
Most of the helium in the Earth's atmosphere comes from alpha decay, since helium is lighter than air and naturally escapes out out of the atmosphere.
Wiki mentions that alpha decay is well modelled as a quantum tunnelling event, see also Geiger-Nuttall law.
As a result of that law, alpha particles have relatively little energy variation around 5 MeV or a speed of about 5% of the speed of light for any element, because the energy is inversely exponentially proportional to half-life. This is because:
- youtu.be/_f8zeEI0oys?t=796 George Gamow and Edward Condon proposed the quantum tunnelling explanation
- youtu.be/_f8zeEI0oys?t=1725 worked out example that predicts the half-life of polonium-210 based on its emission energy
AlphaGo Zero Updated 2025-07-16
AlphaGo Zero cheat sheet by David Foster (2017)
Source. AlphaGo Zero open source implementation Updated 2025-07-16
5v vs 3.3V Updated 2025-07-16
Alpha Investments Updated 2025-07-16
Very good channel that gives some idea of the behind the scenes of working with card stores and secondary market trading.
Such lessons can have applicability in business and investment outside of the Magic The Gathering context as well. Yet another example that usefulness can come out of uselessness.
The Process of Opening a MTG Store by Alpha Investments (2016)
Source. AlphaPhoenix Updated 2025-07-16
www.youtube.com/watch?v=qiMR6yAFfyA He obtained PhD from UCSB in Materials, exploring, among other things, growth of a semiconductor called lead selenide.
5S ribosomal RNA Updated 2025-07-16
AlphaZero Updated 2025-07-16
Generalization of AlphaGo Zero that plays Go, chess and shogi.
- www.science.org/doi/10.1126/science.aar6404 A general reinforcement learning algorithm that masters chess, shogi, and Go through self-play by Silver et al. (2018), published without source code
- www.quora.com/Is-there-an-Open-Source-version-of-AlphaZero-specifically-the-generic-game-learning-tool-distinct-from-AlphaGo
www.quora.com/Which-chess-engine-would-be-stronger-Alpha-Zero-or-Stockfish-12/answer/Felix-Zaslavskiy explains that it beat Stockfish 8. But then Stockfish was developed further and would start to beat it. We know this because although AlphaZero was closed source, they released the trained artificial neural network, so it was possible to replay AlphaZero at its particular stage of training.
Alps Updated 2025-07-16
Alternating and direct current Updated 2025-07-16
Alternating current Updated 2025-07-16
Alternating current source Updated 2025-07-16
Alternating group Updated 2025-07-16
Note that odd permutations don't form a subgroup of the symmetric group like the even permutations do, because the composition of two odd permutations is an even permutation.
Alternating multilinear map Updated 2025-07-16
Amadeus (film) Updated 2025-07-16
Amateur astronomy Updated 2025-07-16
Amateur radio Updated 2025-07-16
Amateur telescope vendor Updated 2025-07-16
A Mathematician's Apology Updated 2025-07-16
With major mathematicians holding ideas such as:it is not surprise that the state of STEM education is so shit as of 2020, especially at the the missing link between basic and advanced! This also implies that the number of people that can appreciate any advanced mathematics research is tiny, and consequently so is the funding.
Exposition, criticism, appreciation, is work for second-rate minds. [...] It is a melancholy experience for a professional mathematician to find himself writing about mathematics. The function of a mathematician is to do something, to prove new theorems, to add to mathematics, and not to talk about what he or other mathematicians have done.
There are unlisted articles, also show them or only show them.