A **quantile-parameterized distribution** is a type of probability distribution that is characterized directly in terms of its quantiles, rather than through its probability density function (PDF) or cumulative distribution function (CDF). This approach emphasizes the distribution's quantile function, which provides a way to describe the distribution based on the values at specified probabilities.
Sweden primarily uses the metric system for measurements, which is standard in most countries around the world except for a few like the United States. Here are some of the common units of measurement used in Sweden: 1. **Length**: - Meter (m) - Centimeter (cm) - Millimeter (mm) - Kilometer (km) 2.
Alternative set theories are various mathematical frameworks that diverge from the standard set theory, primarily Zermelo-Fraenkel set theory with the Axiom of Choice (ZFC). These theories often emerge to address certain philosophical issues, resolve paradoxes, or explore alternative concepts of mathematical objects. Here is a list of some notable alternative set theories: 1. **Constructive Set Theory**: This approach, which includes theories like Intuitionistic Set Theory, emphasizes constructions and computability.
Gaussian units refer to a system of units used in electromagnetism, which is based on the Gaussian system of measurements. These units are a special case of the cgs (centimeter-gram-second) system, and they are primarily used in theoretical physics, particularly in the context of classical electrodynamics. In the Gaussian system: - The fundamental units are the centimeter (cm) for length, gram (g) for mass, and second (s) for time.
Hartree atomic units, often simply referred to as atomic units (AU), are a system of natural units used primarily in quantum mechanics and atomic physics. They simplify equations by using fundamental constants to define the units of measurement. In Hartree atomic units, the quantities are scaled so that certain fundamental physical constants take on the value of 1.
Computer storage tape media, often simply referred to as tape storage, is a type of data storage technology that involves the use of magnetic tape to store digital information. This medium has been used since the early days of computing and remains relevant today for specific applications. Here are some key points about computer storage tape media: ### Characteristics: 1. **Magnetic Tape**: Tape media consists of a long, narrow strip of plastic film coated with a magnetizable material.
A glossary of backup terms is a collection of definitions and explanations of key concepts, terminology, and jargon commonly used in the context of data backup and recovery. Understanding these terms can help individuals and organizations effectively manage their data and implement robust backup strategies. Below is a glossary of some important backup-related terms: ### A - **Archiving**: The process of moving data that is not regularly accessed to a separate storage location for long-term retention.
The IBM 7340 is a model of a magnetic tape drive that was part of IBM's line of storage devices. It was designed for use with IBM mainframe computers and other compatible systems during the mid-20th century. The IBM 7340 was known for its ability to read and write data on magnetic tape, providing an efficient means of data storage and retrieval at the time.
The Ryu–Takayanagi conjecture is a theoretical proposal in the field of theoretical physics, particularly in the context of quantum gravity and the AdS/CFT correspondence, which relates gravitational theories in Anti-de Sitter (AdS) space to conformal field theories (CFT) defined on the boundary of that space.
A **current loop** is a method used in industrial automation and instrumentations for transmitting analog signals over long distances. The most common type is the 4-20 mA current loop, where a current of 4 milliamperes represents the lowest end of the measurable range (often 0), and 20 milliamperes represents the highest end (often 100%).
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.
Graphite by Ciro Santilli 37 Updated 2025-07-16
The layered one.
Flight envelope protection refers to various safety features and systems designed to ensure that an aircraft operates within its defined performance limits, often referred to as the "flight envelope." The flight envelope is the range of airspeed, altitude, and angle of attack (AoA) within which an aircraft can safely operate. Key aspects of flight envelope protection include: 1. **Overspeed Protection**: Prevents the aircraft from exceeding its maximum airspeed, which can lead to structural damage or loss of control.
Liquid nitrogen by Ciro Santilli 37 Updated 2025-07-16
77K. Low enough for "high temperature superconductors" such as yttrium barium copper oxide, but for "low temperature superconductors", you need to go much lower, typically with liquid helium, which is likely much more expensive. TODO by how much?
Video 1.
Where Do You Get Liquid Nitrogen? by The King of Random (2016)
Source. He just goes to a medical gases shop in a local industrial estate and buys 20L for 95 dollars and brings it back on his own Dewar marked 35LD.
Video 2.
Making Liquid Nitrogen From Scratch! by Veritasium (2019)
Source. "From scratch" is perhaps a bit clickbaity, but I'll take it.

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