Focal length by Ciro Santilli 35 Updated +Created
If you pass parallel light.
For a biconvex spherical lens, it is given by:
where:
  • n: f nidnex
Human Genome Project by Ciro Santilli 35 Updated +Created
As mentioned by Craig Venter in 100 Greatest Discoveries by the Discovery Channel (2004-2005), the main outcomes of the project were:
Important predecessors:
Human genome sequencing project by Ciro Santilli 35 Updated +Created
Quantinuum by Ciro Santilli 35 Updated +Created
Merger between Cambridge Quantum Computing, which does quantum software, and Honeywell Quantum Solutions, which does the hardware.
Quantinuum hardware by Ciro Santilli 35 Updated +Created
Quantinuum H1 by Ciro Santilli 35 Updated +Created
Human loss of fur by Ciro Santilli 35 Updated +Created
Video 1.
How Humans Lost Their Fur by PBS Eons (2020)
Source. Says it is linked to bipedalism to help hunting in hot weather. But could only happen fully after the invention of fire, otherwise you'd be too cold at night.
Human mission to Mars by Ciro Santilli 35 Updated +Created
Human mitochondrial DNA haplogroup by Ciro Santilli 35 Updated +Created
SubStation Alpha by Ciro Santilli 35 Updated +Created
Human mitochondrial molecular clock by Ciro Santilli 35 Updated +Created
Human vitamin by Ciro Santilli 35 Updated +Created
Human vs computer chess by Ciro Santilli 35 Updated +Created
As of 2020's and earlier, humans were far far behind. As of 2020s and earlier, even an average personal computers without a GPU, the hallmark of deep learning beats every human.
Chess is just too easy!
Video 1.
Will a computer defeat Garry Gasparov? by BBC (1993)
Source.
Fourier inversion theorem by Ciro Santilli 35 Updated +Created
A set of theorems that prove under different conditions that the Fourier transform has an inverse for a given space, examples:
Hydrogen spectral series by Ciro Santilli 35 Updated +Created
Kind of a synonym for hydrogen emission spectrum not very clear if fine structure is considered by this term or not.
Formula discovered in 1885, was it the first set to have an empirical formula?
Job scheduler by Ciro Santilli 35 Updated +Created

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