Scalar field dark matter is a theoretical model in the field of cosmology and particle physics that proposes dark matter as a type of scalar field rather than as particles like Weakly Interacting Massive Particles (WIMPs) or axions. In simple terms, a scalar field is defined by a single value (a scalar) at every point in space and time, which can vary from one point to another.
Cell biology (field) by Ciro Santilli 37 Updated +Created
The science that studies cell.
David Abrahams is a mathematician known for his contributions to various areas of mathematics, including topology and category theory. He is also notable for his work in the field of computer science, particularly in programming language design and the development of libraries and tools for software development. Abrahams has a background in both mathematics and computer science, and he is recognized for his research and publications in these fields.
Primordial black holes (PBHs) are hypothetical black holes that may have formed soon after the Big Bang, during the early universe. Unlike stellar black holes, which form from the gravitational collapse of massive stars at the end of their life cycles, primordial black holes are thought to have formed from density fluctuations in the very early universe.
Particle chauvinism is a term used in the context of physics, particularly in discussions surrounding the interpretations and implications of quantum mechanics and particle physics. It refers to the viewpoint or bias that emphasizes the primacy of particles (like electrons, photons, quarks, etc.) in understanding the fundamental nature of reality, often to the exclusion of other potential explanations or frameworks, such as fields or waves.
CC BY-SA 4.0 by Ciro Santilli 37 Updated +Created
Neutrino by Wikipedia Bot 0
A neutrino is a subatomic particle that is part of the Standard Model of particle physics. It is electrically neutral, has an incredibly small mass (which is still not precisely measured but is known to be much less than that of an electron), and interacts very weakly with other matter, meaning it can pass through ordinary matter almost undetected.
Mészáros effect by Wikipedia Bot 0
The Mészáros effect refers to a phenomenon in astrophysics, particularly in the study of gamma-ray bursts (GRBs). It is named after the Hungarian astrophysicist Pál Mészáros. The effect is primarily associated with the late-time behavior of GRBs and relates to the mechanisms of energy release and emission from these astronomical events.
Causality in quantum mechanics by Ciro Santilli 37 Updated +Created
In simple terms, if you believe in the Schrödinger equation and its modern probabilistic interpretation as described in the Schrödinger picture, then at first it seem that there is no strict causality to the outcome of experiments.
People have then tried to recover that by assuming that there is some inner sate beyond the Schrödinger equation, but these ideas are refuted by Bell test experiments, unless we give up the principle of locality, which feels more important, especially in special relativity, where faster-than-light implies time travel, which breaks causality even more dramatically.
The de Broglie-Bohm theory is a deterministic but non-local formulation of quantum mechanics.
Cavity magnetron by Ciro Santilli 37 Updated +Created
Apparently, DC current comes in, and microwaves come out.
TODO: sample power efficiently of this conversion and output spectrum of this conversion on some cheap device we can buy today.
Video 1.
Magnetron, How does it work? by Lesics (2020)
Source.
Video 2.
Device that Won WW2 by Curious Droid
. Source.
RNA polymerase by Ciro Santilli 37 Updated +Created
Converts DNA to RNA.
Bullet Physics parallel execution by Ciro Santilli 37 Updated +Created
Does not seem to support it unfortunately:
Bump function by Ciro Santilli 37 Updated +Created
The Calorimetric Electron Telescope (CALET) is a scientific instrument designed to study high-energy cosmic rays, particularly electrons and gamma rays in the energy range from a few GeV (giga-electronvolts) up to several TeV (tera-electronvolts). It was launched to the International Space Station (ISS) in 2015 as part of a collaborative effort involving institutions from Japan, the United States, and Italy.
Recursion (computer science) by Ciro Santilli 37 Updated +Created
Cold dark matter by Wikipedia Bot 0
Cold dark matter (CDM) is a theoretical form of matter that makes up a significant portion of the total mass-energy content of the universe. It is a critical component in the standard model of cosmology, particularly in the context of the Big Bang theory and structure formation. Here are some key points about cold dark matter: 1. **Nature**: CDM is "cold" in the sense that it moves slowly compared to the speed of light and has low thermal velocities.
Calcium by Ciro Santilli 37 Updated +Created
Calculus of variations by Ciro Santilli 37 Updated +Created
Calculus of variations is the field that searches for maxima and minima of Functionals, rather than the more elementary case of functions from to .

Pinned article: ourbigbook/introduction-to-the-ourbigbook-project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 5. . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact