U. Narayan Bhat by Wikipedia Bot 0
U. Narayan Bhat is a notable figure in the field of mathematics, particularly known for his contributions to probability and statistics. He has authored several research papers and books that address various topics within these disciplines. If you are referring to a specific context or aspect of U.
Dirac delta function by Ciro Santilli 37 Updated +Created
The "0-width" pulse distribution that integrates to a step.
There's not way to describe it as a classical function, making it the most important example of a distribution.
Applications:
Dipole antenna by Ciro Santilli 37 Updated +Created
Video 1.
Radio Wave Properties: Electric and Magnetic Dipole Antennae by Harvard Natural Sciences Lecture Demonstrations (2020)
Source. The dude lights bulbs on an antenna made of a single piece of copper, powered with EM radiation. Amazing.
Figure 1.
Dipole antenna receiver animation
. Source.
Figure 2.
Dipole antenna transmitter animation
. Source.
Plan Calcul by Wikipedia Bot 0
Plan Calcul, also known as the Calculus of Plans, is a formal system used in the field of computational logic and programming languages to describe and analyze processes that can be planned or executed. It typically involves the representation of actions, events, and the sequencing of these elements in a way that allows for reasoning about the outcomes and states of a system. Plan Calcul forms a part of the larger study of concurrent and distributed systems, where planning and execution of actions need to be managed effectively.
Tetsuji Shioda by Wikipedia Bot 0
Tetsuji Shioda is a notable figure in the world of aikido, a modern Japanese martial art that focuses on harmonious movement and the redirection of an opponent's energy. Born in 1915, Shioda was a direct student of the founder of aikido, Morihei Ueshiba.
De Broglie-Bohm theory by Ciro Santilli 37 Updated +Created
Deterministic, but non-local.
Algebraic K-theory is a branch of mathematics that studies the algebraic structures of rings and schemes using tools from homotopy theory and abstract algebra. The fundamental theorems in algebraic K-theory provide critical insights and relationships between various algebraic objects.
Diophantine equation by Ciro Santilli 37 Updated +Created
Sometimes systems of Diophantine equations are considered.
Problems generally involve finding integer solutions to the equations, notably determining if any solution exists, and if infinitely solutions exist.
The general problem is known to be undecidable: Hilbert's tenth problem.
The Pythagorean triples, and its generalization Fermat's last theorem, are the quintessential examples.
Diminutive by Ciro Santilli 37 Updated +Created
Mitra 15 by Wikipedia Bot 0
Mitra 15 is an Indian-origin anti-tank guided missile (ATGM) system developed by the DRDO (Defence Research and Development Organization). It is meant for use by the Indian armed forces and is a part of India's efforts to modernize its military capabilities. Mitra 15 is designed to be effective against armored vehicles and fortifications, combining advanced guidance systems to enhance accuracy and effectiveness in combat situations.
Dilution refrigerator by Ciro Santilli 37 Updated +Created
Video 1.
This Is What A Helium Dilution refrigerator Is by Dietterich Labs (2019)
Source.
Takuro Shintani by Wikipedia Bot 0
Takuro Shintani may refer to a person, but there is limited public information available about someone by that name in widely known contexts. It is possible that he could be a figure in a specific field such as art, literature, or science. However, without more context or detail about their significance or contributions, it's difficult to provide a specific answer.
Takeo Wada by Wikipedia Bot 0
Takeo Wada is not a widely recognized figure in mainstream media or literature, at least as of my last knowledge update in October 2023. It's possible that Takeo Wada could be a private individual, a character from a work of fiction, or a person emerging in relevance after that date.
Digital signal processing by Ciro Santilli 37 Updated +Created
Digital Object Identifier by Ciro Santilli 37 Updated +Created
Digital micromirror device by Ciro Santilli 37 Updated +Created
Video 1.
The Insane Engineering of DLP by Zack Freedman (2022)
Source.
Ramaiyengar Sridharan is likely a reference to an individual, but there is no widely recognized public figure or entity known by that name as of my last knowledge update in October 2021. It's possible that he may be a specialized professional, academic, or someone notable in a specific community or field that hasn't reached broader recognition.
Dharma by Ciro Santilli 37 Updated +Created
Diamond Sutra by Ciro Santilli 37 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