Radar by Ciro Santilli 35 Updated +Created
Cloud chamber by Ciro Santilli 35 Updated +Created
Figure 1.
Radium 226 source in a cloud chamber
. Source.
Video 1.
How to make a cloud chamber by Suzie Sheehy (2011)
Source.
Radio receiver by Ciro Santilli 35 Updated +Created
As well put by Wikipedia, a radio receiver has to perform three functions on the signal from the antenna:
  • filtering, so you can tune the station you care about. This filters based on the frequency of the carrier wave you want. I.e. you use a bandpass filter.
  • amplification: otherwise you won't be able to hear anything if the emitter is too far away
  • demodulation: this means decoding the signal based on whatever way it was encoded, notably e.g. AM/FM
4G by Ciro Santilli 35 Updated +Created
Television by Ciro Santilli 35 Updated +Created
Nuclear physics by Ciro Santilli 35 Updated +Created
Nuclear physics is basically just the study of the complex outcomes of weak interaction + quantum chromodynamics.
Titanium compound by Ciro Santilli 35 Updated +Created
Recombination (cosmology) by Ciro Santilli 35 Updated +Created
Expansion of the universe by Ciro Santilli 35 Updated +Created
Biochemist by Ciro Santilli 35 Updated +Created
Real coordinate space of dimension three by Ciro Santilli 35 Updated +Created
Writing by Ciro Santilli 35 Updated +Created
Scriptorium by Ciro Santilli 35 Updated +Created
Visualizing 4D by Ciro Santilli 35 Updated +Created
Simulate it. Just simulate it.
Video 1.
4D Toys: a box of four-dimensional toys by Miegakure (2017)
Source.

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!
Video 1.
Intro to OurBigBook
. Source.
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
    Video 2.
    OurBigBook Web topics demo
    . Source.
  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:
    • to OurBigBook.com to get awesome multi-user features like topics and likes
    • as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
    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.
    Video 4.
    OurBigBook Visual Studio Code extension editing and navigation demo
    . Source.
  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