The Stark effect is the phenomenon in which the energy levels of atoms and molecules are shifted and split in the presence of an external electric field. This effect is named after the German physicist Johann Stark, who discovered it in 1913. When an external electric field is applied, it interacts with the electric dipole moments of the atoms or molecules.
Stereoscopic spectroscopy is a technique that combines principles of spectroscopy with stereoscopic imaging to analyze and visualize the spectral characteristics of samples in three dimensions. This method allows researchers to obtain detailed information about the spatial distribution and chemical composition of materials. In traditional spectroscopy, light is used to study the interaction of different materials with electromagnetic radiation, often providing information about their molecular or atomic structure.
Surface core level shift (SCLS) refers to the phenomenon observed in surface-sensitive spectroscopic techniques, such as X-ray photoelectron spectroscopy (XPS), where the binding energy of core-level electrons in atoms located at or near the surface of a material differs from that of the same atoms in the bulk of the material.
The Unscrambler is a software tool used for multivariate data analysis, often applied in fields like chemistry, food science, and quality control, among others. It is developed by CAMO Software and provides a range of statistical and graphical tools to analyze complex data sets. Users can perform tasks like principal component analysis (PCA), partial least squares regression (PLS), and other chemometric methods.
Triplet-triplet annihilation (TTA) is a photophysical process that occurs in molecular systems, particularly those involving organic molecules or organic semiconductors. This phenomenon involves the interaction of two triplet excited states, leading to a variety of interesting outcomes, typically in the context of energy transfer and photon generation. ### Key Concepts: 1. **Triplet States**: Molecules can be excited to higher energy levels upon absorption of photons.
The largest galaxies in the universe can be ranked based on various criteria, such as their mass, diameter, or the number of stars they contain. Here are some of the largest known galaxies based on these criteria: 1. **IC 1101**: Often considered the largest galaxy currently known, IC 1101 is a giant elliptical galaxy located in the Abell 2029 galaxy cluster.
Feller's coin-tossing constants are specific numerical values that arise in the study of probability theory, particularly in relation to the behavior of sequences of random events such as coin tosses. They are associated with the limiting distributions of random walks and related stochastic processes. In the context of coin tossing, Feller's constants provide insights into the expected outcomes and probabilities of various events occurring as the number of tosses increases.
The elliptic gamma function is a special function that generalizes the classical gamma function through the use of elliptic functions. It is a part of the theory of elliptic hypergeometric functions and has connections to various areas in mathematics and mathematical physics, including representation theory, combinatorics, and algebraic geometry.
A ceramic metal-halide lamp (CMH) is a type of high-intensity discharge (HID) lamp that uses a ceramic arc tube to contain the light-producing gases and metal halides. Unlike traditional metal-halide lamps that use quartz tubes, CMH lamps utilize advanced ceramic materials, such as polycrystalline alumina, which allow for higher efficiency, improved color rendering, and better performance overall.
### Gambling Gambling is the act of wagering or betting money or something of value on an event with an uncertain outcome, with the primary intent of winning additional money or material goods. It involves two main components: 1. **Chances**: The outcome of a wager often relies on the element of chance, which can range from a fully random event (like a dice roll or a lottery draw) to events influenced by skill (like poker or sports betting).
Lottery mathematics refers to the application of mathematical principles and techniques to analyze lottery games, including their odds, expected values, and strategies for playing. It encompasses a range of topics, including probability, combinatorics, and statistics. Here are some key concepts involved in lottery mathematics: 1. **Probability**: Lottery games typically involve selecting a certain number of numbers from a larger set. The probability of winning can be calculated based on the total number of possible combinations.
RB 199 refers to a specific compound known as "Rimonabant," which is a drug that was developed as an anti-obesity medication. It acts as a selective antagonist of the cannabinoid receptor CB1, which is involved in appetite regulation, metabolism, and reward processes related to food intake. Rimonabant was primarily studied for its potential to aid in weight loss and to improve metabolic health.
WISE J224607.57−052635.0 is a celestial object identified by its coordinates in the sky, which is part of the Wide-field Infrared Survey Explorer (WISE) catalog. It is known to be a brown dwarf, which is a type of substellar object that is not massive enough to sustain hydrogen fusion in its core, unlike stars. The specific designation refers to its position—224607.57 degrees in right ascension and -052635.
Board game designers are individuals who create new board games, developing concepts, mechanics, themes, and gameplay experiences. Their work involves a combination of creativity, design skills, and an understanding of game theory and player psychology. Designers often go through several stages in their process, including brainstorming ideas, creating prototypes, playtesting to gather feedback, and refining the game before it is published.
Radner equilibrium is a concept in economic theory that extends the idea of general equilibrium in markets to an environment where agents have incomplete information and trading occurs over time. It is particularly relevant in the context of dynamic models of asset pricing and markets where agents face uncertainty regarding the state of the world. The concept is named after economist Roy Radner, who developed the framework in the 1970s.
The Beta function is a special function in mathematics that is closely related to the gamma function and is defined for positive real numbers. It is often denoted as \( B(x, y) \) and defined as follows: \[ B(x, y) = \int_0^1 t^{x-1} (1-t)^{y-1} \, dt \] for \( x > 0 \) and \( y > 0 \).
The Generalized Gamma Distribution (GGD) is a flexible probability distribution that extends the gamma distribution by including additional shape parameters, thus allowing it to model a wider range of data behaviors.
Hadamard's gamma function is a special function related to the classical gamma function, denoted as \( \Gamma(z) \). It is defined for complex numbers and can be expressed in terms of an infinite product involving prime numbers. Hadamard's gamma function is particularly useful in number theory and complex analysis.
The Inverse-Gamma distribution is a continuous probability distribution that is often used in Bayesian statistics, particularly in the context of prior distributions for variances. It is a two-parameter distribution that is defined over positive real numbers.
The inverse gamma function refers to the function that is defined as the inverse of the gamma function. The gamma function, denoted as \(\Gamma(z)\), is a generalization of the factorial function to complex numbers, except for the non-positive integers. It is defined for \(z > 0\) as: \[ \Gamma(z) = \int_0^\infty t^{z-1} e^{-t} \, dt.

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