Hamiltonian mechanics by Ciro Santilli 35 Updated +Created
Equivalent to Lagrangian mechanics but formulated in a different way.
TODO understand original historical motivation, www.youtube.com/watch?v=SZXHoWwBcDc says it is from optics.
Intuitively, the Hamiltonian is the total energy of the system in terms of arbitrary parameters, a bit like Lagrangian mechanics.
Mechanics problem by Ciro Santilli 35 Updated +Created
Atwood machine by Ciro Santilli 35 Updated +Created
Harmonic oscillator by Ciro Santilli 35 Updated +Created
Spring-mass system by Ciro Santilli 35 Updated +Created
Rigid body dynamics simulator by Ciro Santilli 35 Updated +Created
Erwin Coumans by Ciro Santilli 35 Updated +Created
Quantum chemistry software by Ciro Santilli 35 Updated +Created
PySCF by Ciro Santilli 35 Updated +Created
First Solvay Conference (1911) by Ciro Santilli 35 Updated +Created
Fifth Solvay Conference (1927) by Ciro Santilli 35 Updated +Created
ARTIQ by Ciro Santilli 35 Updated +Created
Annus Mirabilis papers by Ciro Santilli 35 Updated +Created
Greenberger-Horne-Zeilinger state by Ciro Santilli 35 Updated +Created
Barton Zwiebach by Ciro Santilli 35 Updated +Created
Edward Teller by Ciro Santilli 35 Updated +Created
Video 1.
Witnessing the test explosion Edward Teller interview by Web of Stories (1996)
Source.
Video 2.
Edward Teller, An Early Time
. Source. Comissioned by the Los Alamos National Laboratory in 1979. Producer: Mario Balibreraa.
Work about Enrico Fermi by Ciro Santilli 35 Updated +Created
Depth of a quantum circuit by Ciro Santilli 35 Updated +Created
This is an important metric, because it takes some time for the quantum operations to propagate, and so the depth of a circuit gives you an idea of how long the coherence time a hardware needs to support a given circuit.
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
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    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
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