Hydrosilylation is a chemical reaction that involves the addition of a silicon-containing compound, typically an organosilane, to a carbon-carbon double bond (C=C) or a carbon-heteroatom multiple bond. This reaction leads to the formation of silane products and is typically facilitated by catalysts, often transition metal catalysts such as platinum, rhodium, or nickel.
Birkat Hachama, also known as the "Blessing of the Sun," is a Jewish ritual that takes place once every 28 years. It is based on the belief that the sun's position in the sky on the fourth day of creation is replicated during this specific time period. The blessing is recited on the morning of the Wednesday or Thursday of Passover, specifically during the week after the spring equinox.
Herbert Feigl (1902–1988) was an Austrian-born philosopher of science and a prominent figure in logical positivism and the philosophy of mind. He was associated with the Vienna Circle, a group of philosophers and scientists in the early 20th century that advocated for a scientific approach to philosophical problems and the verification principle, which holds that a statement is meaningful only if it can be empirically verified.
Phronesis is a concept originating from ancient Greek philosophy, often translated as "practical wisdom" or "practical judgment." Unlike other types of knowledge, such as theoretical knowledge (episteme) or technical skill (techne), phronesis refers to the ability to make sound judgments about how to act in particular situations, especially in the context of moral or ethical decisions. Aristotle extensively discussed phronesis in his works, particularly in the "Nicomachean Ethics.
Majority rule is a governance principle or decision-making process whereby the option or choice that receives more than half (more than 50%) of the votes or support is selected as the outcome. This concept is often used in democratic systems, elections, and various collective decision-making scenarios. The idea is that the preferences of the majority of voters or group members should determine the decisions or policies that are implemented.
Florian Neukart is a researcher and expert in the fields of artificial intelligence, quantum computing, and optimization. He has contributed to the development of algorithms and methodologies that leverage quantum mechanics for solving complex problems. Neukart's work often intersects with areas such as machine learning, hybrid quantum-classical systems, and the application of quantum computing techniques to practical issues.
The sabin is a unit of measurement for luminous efficacy, specifically used to quantify the amount of light that is perceived by the human eye. It is named after the American acoustician, physicist, and inventor, Wallace Clement Sabine. One sabin corresponds to one lumen per square meter of surface area that is uniformly illuminated. In practical terms, it is often used in fields related to lighting design, architecture, and engineering to assess and quantify light distribution in a given space.
A square is a unit of area that is commonly used in real estate and property measurement. It represents a square measurement of one unit of length by one unit of length. The most commonly used square measurement is the square foot (sq ft), which is the area of a square with sides that are each one foot long. Similarly, there are square meters, square yards, and other units of measurement.
Michael A. Bender is a notable figure in the field of political science and political behavior, primarily recognized for his work on electoral processes, political parties, and voter behavior.
Spin models are theoretical frameworks used primarily in statistical mechanics and condensed matter physics to study the collective behavior of spins in magnetic systems. The "spin" refers to a fundamental property of particles, such as electrons, which can be thought of as tiny magnetic moments that can point in different directions. Spin models help us understand phase transitions, magnetic ordering, and critical phenomena.
"Hundredweight" is a unit of weight measurement that is used in both the Imperial and U.S. customary systems, but the value of a hundredweight differs between these systems. 1. **Imperial hundredweight (cwt)**: In the Imperial system (used in the UK), a hundredweight is equal to 112 pounds (lbs), or approximately 50.8 kilograms (kg). 2. **U.S. hundredweight (cwt)**: In the U.S.
A solar mass (often denoted as \( M_\odot \)) is a standard unit of mass used in astronomy to measure the mass of stars and other astronomical objects. It is defined as the mass of the Sun, which is approximately \( 1.989 \times 10^{30} \) kilograms (or about \( 333,000 \) times the mass of Earth).
Volume is a measure of the three-dimensional space that an object occupies. It quantifies how much space is contained within a solid, liquid, or gas. Volume can be expressed in various units of measurement, such as cubic meters (m³), liters (L), cubic centimeters (cm³), and gallons, among others. The method for calculating volume can vary depending on the shape of the object: 1. **Rectangular Prism (Box)**: Volume = length × width × height 2.
Bravo Music can refer to different things depending on the context. Here are a few interpretations: 1. **Bravo Music (Music Label)**: It may refer to a music label or production company that focuses on promoting and producing music. 2. **Bravo Music (Music Platform)**: It could be a platform that provides music streaming, distribution, or other related services.
Platform screen doors (PSDs) are barriers installed at train or subway stations that separate the platform from the tracks. They are designed to enhance safety and improve passenger experience by preventing accidents on the tracks, such as falls or unauthorized access, as well as to reduce the impact of noise and improve climate control within stations.
Frederick S. Holmes could refer to a variety of individuals, but one prominent figure by that name is an American physician and researcher known for his contributions to the fields of medicine and medical education. He's recognized for his work in the history of medicine and the development of medical ethics.
Normal Moveout (NMO) is a concept used in seismic data processing, particularly in the context of time-domain analysis of seismic reflection data. It refers to the phenomenon where seismic waves from a point source reflect off subsurface geological layers and travel at various angles to reach the surface. When seismic waves propagate through the Earth, they travel at different velocities depending on the geological materials they encounter.
Physical security refers to the measures taken to protect physical assets, resources, and facilities from various threats, including theft, vandalism, natural disasters, and unauthorized access. It encompasses a wide range of strategies and tools aimed at safeguarding personnel, property, and information. Key components of physical security include: 1. **Access Control**: This involves controlling who can enter a facility or a specific area within a facility. Methods include security personnel, locks, keycards, biometric scanners, and visitor management systems.
Technical failure refers to the breakdown or malfunction of a system, device, or piece of equipment due to technical issues. This can occur in various contexts—such as in machinery, software, electronics, communications, or any technology-dependent environment. Technical failures can manifest as errors, faults, or defects that prevent a system from operating as intended. Some common causes of technical failures include: 1. **Hardware Malfunction**: Physical components may fail due to wear and tear, manufacturing defects, or external damage.
2021 RR205 is an asteroid that was discovered in 2021. It is classified as a near-Earth object (NEO), specifically an Apollo-type asteroid, which means its orbit crosses that of Earth's. Asteroids like 2021 RR205 can vary in size and composition, and their trajectories are closely monitored by astronomers to assess any potential risk of impact with Earth.

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