J. Robert Oppenheimer, often referred to as the "father of the atomic bomb," has been the subject of various cultural depictions across literature, film, television, and theater. These portrayals often explore his role in the Manhattan Project, his complex personality, moral dilemmas, and the broader implications of nuclear weapons. Here are some notable examples: 1. **Literature**: Oppenheimer has been featured in several biographies and works of historical fiction.
Dark matter is a form of matter that does not emit, absorb, or reflect light, making it invisible and detectable only through its gravitational effects on visible matter. It is believed to make up about 27% of the universe's mass-energy content, while ordinary matter (like stars and planets) constitutes only about 5%. The remaining 68% is attributed to dark energy, which is thought to be responsible for the accelerated expansion of the universe.
Riemannian geometry is a branch of differential geometry concerning Riemannian manifolds, which are smooth manifolds equipped with a Riemannian metric. Here are some important formulas and concepts commonly used in Riemannian geometry: ### Key Formulas and Concepts 1.
Mathematical jargon refers to specialized terminology used in mathematics. Below is a list of common mathematical terms and phrases that are frequently encountered in various fields of mathematics: 1. **Abstraction** - The process of extracting the underlying essence of a concept, often involved in moving from concrete to general ideas. 2. **Algorithm** - A step-by-step procedure or formula for solving a problem or accomplishing a task.
Mnemonics in physics can help students remember complex concepts, formulas, and principles. Here is a list of some commonly used physics mnemonics: ### Mechanics 1. **Kinematic Equations**: - **SUVAT** for remembering the variables: - S = Displacement - U = Initial Velocity - V = Final Velocity - A = Acceleration - T = Time 2.

Pinned article: 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 2.
    You can publish local OurBigBook lightweight markup files to either https://OurBigBook.com or as a static website
    .
    Figure 3.
    Visual Studio Code extension installation
    .
    Figure 4.
    Visual Studio Code extension tree navigation
    .
    Figure 5.
    Web editor
    . 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