Velocity dispersion is a measure of the range of velocities within a group of objects, such as stars in a galaxy or galaxies in a cluster. It quantifies how much the velocities of the objects deviate from the average velocity of the group. In a more technical sense, it is defined as the standard deviation of the velocities of the objects in the sample. In astrophysics, velocity dispersion is an important metric because it provides insights into the dynamics and mass distribution of celestial bodies.
The Borda-Carnot equation describes the relationship between the temperature, pressure, and specific properties of a fluid in a thermodynamic context, particularly for a fluid undergoing adiabatic (no heat transfer) expansion or compression. It is commonly associated with the performance of turbines and compressors. The equation itself typically relates how the enthalpy, pressure, and temperature of the fluid change during these processes.
The Quest Trio is typically a term that refers to a specific musical ensemble. However, the information regarding it can vary widely depending on the context, as "The Quest Trio" might represent different groups in different regions or genres. In terms of classical music, a trio often refers to a group of three musicians who perform together, typically consisting of a string instrument, a wind instrument, and a piano, or a similar combination.
The Hazen–Williams equation is an empirical formula used to calculate the flow of water through pipes, specifically in civil engineering and hydraulics. It estimates the head loss (pressure loss due to friction) in a pipe based on the flow rate, pipe diameter, and the roughness of the pipe's interior surface. The equation is particularly applicable for water flow in pipes where the flow is turbulent. The general form of the Hazen–Williams equation is: \[ h_f = 0.
Quantum ergodicity is a concept that arises in the context of quantum mechanics and dynamical systems, particularly in the study of quantum systems that exhibit chaotic behavior. It relates to the long-term statistical properties of quantum states and how they evolve over time. In classical mechanics, the notion of ergodicity refers to the idea that a system, over a long period, will explore its available phase space in such a way that the time average of a property is equal to the ensemble average.
Ukrainian physicists are scientists from Ukraine who specialize in the field of physics. They contribute to various branches of physics, including theoretical physics, experimental physics, condensed matter physics, nuclear physics, and many others. Ukraine has a rich history of contributions to science and technology, with notable physicists emerging from the country, particularly during the Soviet era.
The Penrose transform is a mathematical tool that arises in the context of twistor theory, a framework formulated by physicist Roger Penrose in the 1960s. The primary aim of twistor theory is to reformulate certain aspects of classical and quantum physics, particularly general relativity, in a way that simplifies the complex structures involved in these theories. **Key Concepts:** 1.
A Nuclear Instrumentation Module (NIM) is a standardized system used in nuclear physics and radiation detection to house and manage various electronic devices and instruments for measuring and analyzing nuclear radiation. The design of NIM modules allows for the integration of multiple components into a single framework, facilitating the operation and data collection from different types of detectors.
The Binomial distribution is a discrete probability distribution that models the number of successes in a fixed number of independent Bernoulli trials (experiments with two possible outcomes, often termed "success" and "failure"). This type of distribution is particularly useful in situations where you want to determine the likelihood of a certain number of successes within a series of trials.
The binomial series is a way to express the expansion of a binomial expression raised to a power. Specifically, it provides the expansion of the expression \((a + b)^n\) for any real (or complex) number \(n\).
The Extended Negative Binomial Distribution, sometimes referred to in some contexts as the Generalized Negative Binomial Distribution, is a statistical distribution that generalizes the standard negative binomial distribution. The standard negative binomial distribution typically models the number of failures before a specified number of successes occurs in a sequence of independent Bernoulli trials.
Albert W. Hull (1880–1966) was an American physicist and inventor known for his contributions to the field of electrical engineering and vacuum technology. He is most notably recognized for his invention of the "electric discharge tube," which led to the development of the "Hull Cell," a device used for electroplating and electrochemical analysis. The Hull Cell is instrumental in assessing the quality of electroplating solutions by providing a convenient way to evaluate the effects of various variables on plating quality.
Daniel Neumark is a name that may refer to several individuals in various fields, but it is most commonly associated with the prominent American economist who specializes in labor economics and applied econometrics. He has contributed significantly to research on topics such as the effects of minimum wage laws, labor market dynamics, and economic policy.
David A. B. Miller is an accomplished physicist primarily known for his work in the fields of optical physics and photonics. He has made significant contributions to areas such as nano-optics, optical communications, and imaging. Miller has authored numerous scientific papers and has been involved in various advancements related to optical devices and technologies.
Gerardo Beni is a prominent figure in computer science, particularly known for his contributions to the field of computer graphics, visualization, and geographic information systems (GIS). His work often focuses on the application of computer technology to solve complex problems in spatial data analysis and representation. Additionally, he has been involved in various research projects and has published numerous papers on topics related to his areas of expertise.
Gabriel Kotliar is a prominent theoretical condensed matter physicist known for his contributions to the understanding of quantum many-body systems, strongly correlated electron systems, and simulation techniques in condensed matter physics. He has worked extensively on issues related to electronic structure and has been involved in developing theoretical frameworks that describe various physical phenomena in materials. In addition to his research, Kotliar has been recognized for his influence in the field, including being involved in various academic and professional organizations.
Gustavo Scuseria is a prominent figure known primarily for his work in the field of chemistry, particularly in theoretical and computational chemistry. He is a professor and has made significant contributions to the development of various theoretical methods and computational techniques used to understand complex chemical systems. His research often involves topics such as electron correlation, quantum mechanical simulations, and the behavior of molecular systems.
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!
Intro to OurBigBook
. Source. We have two killer features:
- 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-calculusArticles 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/derivativeVideo 2. OurBigBook Web topics demo. Source. - 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.
- 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
Figure 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.Figure 3. Visual Studio Code extension installation.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. - Infinitely deep tables of contents:
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