A flashtube is an electrical device used to produce a brief but intense burst of light, primarily in photography and various industrial applications. It typically consists of a glass or transparent tube filled with a low-pressure gas, which can be ionized to create a plasma when a high voltage is applied across its electrodes. Flashtubes are commonly used in flash photography, where they provide the short, bright flashes of light needed to properly expose photos in low-light conditions or to freeze motion.
Vincenzo Di Nicola is a prominent figure in the fields of computer science and mathematics, particularly known for his work in the area of artificial intelligence, machine learning, and decision-making systems. However, there may be multiple individuals with that name, and it’s important to clarify the specific context in which you are referring to him.
"The Logic of Modern Physics" is a book written by the physicist and philosopher of science, Erwin Schrödinger, published in 1951. In this work, Schrödinger explores the foundational aspects of quantum mechanics and its implications for our understanding of reality. The book discusses the philosophical and logical implications of modern physics, particularly how the principles of quantum mechanics challenge classical notions of determinism and the nature of physical reality.
A flat lens, often referred to as a flat optics or flat lens technology, is a type of optical lens that is designed to be flat rather than curved, which is typical for traditional lenses. Unlike conventional lenses that rely on spherical or cylindrical shapes to bend light, flat lenses use advanced materials and designs to manipulate light. One of the prominent approaches used in flat lenses is the use of metamaterials or nanostructures that can control the phase, amplitude, or polarization of light.
Fleischmann is a well-known brand in the model railroad industry, originating in Germany. Founded in 1887 by the Fleischmann brothers, the company initially produced metal products before transitioning to model trains. Fleischmann is recognized for its high-quality model locomotives, rolling stock, and track systems, primarily in scales such as HO (1:87), N (1:160), and H0m (narrow gauge).
A Flexible Debris-Resisting Barrier (FDRB) is an engineering solution designed to mitigate the impact of debris flows, landslides, or other forms of natural mass movement. These barriers are typically constructed from flexible materials that allow them to absorb and deflect debris while minimizing damage to both the structure and the surrounding environment.
"The Oxford Murders" is a novel written by Spanish author and mathematician José Antonio Rodríguez, published in Spanish as "Los misterios de Oxford" in 2003. The book combines elements of a mystery thriller and a mathematical puzzle, centered around the world of academia, specifically within the context of the University of Oxford. The plot revolves around an American graduate student, who encounters a series of murders linked by a mathematical pattern.
Vladimir Entov is a figure associated with various fields, including science, engineering, or technology. However, without additional context, it is difficult to provide specific information about him, as multiple individuals could share that name. If you have a particular area of interest or context in mind (e.g.
Vladimir Fortov is a prominent Russian physicist known for his work in the fields of plasma physics, high-energy-density physics, and complex systems. He has contributed significantly to research involving the properties of matter under extreme conditions, such as high temperature and pressure, and has been involved in various scientific and academic institutions in Russia. Fortov has also served in various leadership roles, including as the president of the Russian Academy of Sciences.
1000minds is a decision-making and prioritization tool designed to help individuals and organizations make better choices in complex situations. It utilizes principles from decision theory and psychology to facilitate structured decision-making processes. The platform enables users to clarify their preferences and priorities by using various decision-making frameworks, such as pairwise comparison and priority analysis. Users can input a set of criteria or options, and 1000minds helps them analyze and rank these based on their preferences.
The year 1992 was notable in the field of robotics for several reasons, including advancements in robotics technology, significant events, competitions, and publications. Here are a few highlights: 1. **Robotic Competitions**: The 1992 International Robot Olympiad (IRO) took place, showcasing various robotic technologies and fostering innovation among participating teams. These competitions helped in driving advancements in robotics and encouraging collaboration among researchers and developers.
One notable 19th-century Russian physicist is **Alexander Popov** (1859–1906). He is best known for his pioneering work in the development of radio technology. In 1895, he conducted experiments that demonstrated the transmission of electromagnetic waves over distances, which contributed to the later development of radio communication.
As of my last knowledge update in October 2021, there is no widely recognized public figure by the name of Vladimir Neuvazhaev. If he has gained significance or notoriety after that date, or if he is a figure known in specific niche circles, I wouldn't have information on him.
The 3SUM problem is a classic algorithmic problem in computer science, particularly in the fields of computer algorithms and complexity theory. The problem can be stated as follows: Given an array of integers, the task is to determine if there exist three distinct indices \( i, j, k \) such that the sum of the elements at these indices is equal to zero, i.e.
4GLS stands for "Fourth-Generation Light Source," which is a type of synchrotron light source used for advanced materials research. It produces high-intensity, tuneable, and short-pulse light, covering a wide range of wavelengths from infrared to X-rays. The primary characteristics of a 4GLS include: 1. **Short-pulse operational modes**: This allows for time-resolved studies, enabling scientists to observe rapid processes in materials.
Abdul Majid is a physicist known for his contributions to the field of theoretical physics, particularly in areas such as quantum mechanics, atomic physics, and optical sciences. However, as of my last update in October 2023, there may not be a widely recognized physicist by that exact name in public records or existing literature.
FORMAC, which stands for Formal Mathematical Computation, is a programming language and system designed for symbolic computation and formal reasoning in mathematics. It provides tools for manipulating mathematical expressions, performing algebraic operations, and solving equations symbolically. The primary goal of FORMAC is to facilitate the development of algorithms and software systems that can handle complex mathematical manipulations easily.
The Thermaic Gulf, also known as the Gulf of Thermaikos, is a body of water located in northern Greece. It is part of the Aegean Sea and is situated to the west of the city of Thessaloniki, the second-largest city in Greece. The gulf is characterized by its relatively shallow waters and is bordered by several towns and cities, including Thessaloniki, Nea Moudania, and Katerini.
The term "thermal center" can have a few different meanings depending on the context in which it is used. Here are a few interpretations: 1. **Geographical Context**: In geography or climate science, a thermal center might refer to a point on the Earth's surface that acts as a focus for temperature variations, often related to ocean currents, altitude, or geographic features. For example, urban areas can act as thermal centers due to the heat generated by human activities.
Jacques Charles (1746–1823) was a French inventor and scientist, best known for his work in the fields of chemistry and physics. He is particularly noted for Charles's Law, which describes the relationship between the volume and temperature of a gas at constant pressure. According to this law, the volume of a gas increases with an increase in temperature, provided the pressure remains constant. Charles was also involved in the early development of lighter-than-air flight, designing and constructing hydrogen-filled balloons.

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