Tanpura by Ciro Santilli 34 Updated +Created
Hindu chant by Ciro Santilli 34 Updated +Created
Fiber optic coupling by Ciro Santilli 34 Updated +Created
This section is about stuff efficiently getting light into or out of optical fibers, or joining two optical fibers together end to end so that light goes through.
Historically this has been an important development, as it is much harder than with wires since optical fiber has to be very narrow to work properly, e.g. this is mentioned a lot in City of Light: The Story of Fiber Optics.
Video 1.
Coupling Laser beams into Fiber Optic Cable by Lee's Lab
. Source.
Triplet state by Ciro Santilli 34 Updated +Created
Fiber optic cable by Ciro Santilli 34 Updated +Created
LIKE (SQL) by Ciro Santilli 34 Updated +Created
Allison Huynh by Ciro Santilli 34 Updated +Created
Scott Hassan's ex-wife. She is a "Vietnam immigrant who attended Stanford University on a full scholarship".[ref]
Video 1.
Why former Obama donor Allison Huynh is backing Trump by The Daily Signal
. Source. 2024, before the 2024 United States presidential election, possibly language barrier.
Video 2.
Silicon Valley Billionaire's Divorce Makes Headlines by NBC Bay Area
. Source. 2021.
Optical fiber equipment by Ciro Santilli 34 Updated +Created
Fiber optic equipment by Ciro Santilli 34 Updated +Created
package.json by Ciro Santilli 34 Updated +Created
Candela vs lumen by Ciro Santilli 34 Updated +Created
Candela is lumen density per solid angle.
npm by Ciro Santilli 34 Updated +Created
Lumen (unit) by Ciro Santilli 34 Updated +Created
1 Watt equals 683 Lumens of light power at wavelength 555 nm. At other wavelengths 1 Watt is less Lumens as it takes into account the sensitivity of the average human eye.
Wavelength by Ciro Santilli 34 Updated +Created
Candela by Ciro Santilli 34 Updated +Created
Candela is Lumen density per solid angle. A sphere emitting 1 Candela uniformly in all directions produces 4π Lumen total power.
Extracurricular community by Ciro Santilli 34 Updated +Created
This section is about organized groups of people doing extracurricular activities.
Some of them offer money prizes for all or some of the succesfull applicants.
Weight by Ciro Santilli 34 Updated +Created
Luminous intensity by Ciro Santilli 34 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!
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