A nautical mile is a unit of measurement used primarily in maritime and aviation contexts to measure distances over the Earth's surface. One nautical mile is defined as exactly 1,852 meters (or approximately 1.15078 statute miles). The nautical mile is based on the circumference of the Earth and is equivalent to one minute of latitude.
Once the ball starts rolling, these are people who should be contacted.
Basically anything under educational charitable organization counts.
2019-12-26: scraped off some of the likely soap scum from standing bathtub with hard plastic rice cooker spoon.
This form is not really an inner product in the common modern definition, because it is not positive definite, only a symmetric bilinear form.
Wave-particle duality by Ciro Santilli 40 Updated 2025-07-16
The history of light if funny.
But then evidence of the diffraction of light start to become unbearably strong, culminating in the Arago spot.
And finally it was understood from Maxwell's equations that light is a form of electromagnetic radiation, as its speed was perfectly predicted by the theory.
But then evidence of particle nature started to surface once again with the photoelectric effect. Physicists must have been driven mad by all these changes.
The growing number of parameters of the Standard Model is one big source of worry for early 21st century physics, much like the growing number of particles was a worry in the beginning of the 20th (but that one was solved by 2020).
Integrationism is a concept that can apply to different fields, but it generally refers to the process or ideology of integrating separate components into a unified whole. These are some contexts where integrationism might be relevant: 1. **Sociocultural Integrationism**: This typically involves the integration of diverse cultural groups within a society, emphasizing the importance of social cohesion and the benefits of mutual respect and understanding among different communities.
The Ackermann function is a well-known example of a recursive function that is not primitive recursive. It serves as a benchmark for computing and illustrates the concept of deep recursion.
Omni-Path is a high-performance network interconnect technology designed primarily for high-performance computing (HPC) environments. Developed by Intel, Omni-Path aims to provide enhanced scalability, efficiency, and low-latency communication compared to traditional network technologies such as InfiniBand and Ethernet.

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