Moisture expansion, also known as moisture-swelling or hygroscopic expansion, refers to the increase in volume or dimensional changes that materials undergo when they absorb moisture from the environment. This phenomenon is particularly common in porous materials like wood, concrete, clay, and certain polymers. ### Key Aspects of Moisture Expansion: 1. **Materials Affected**: - **Wood**: Wood can swell significantly when it absorbs water, leading to warping or cracking.
The Photo-Carnot engine is a conceptual thermodynamic cycle that combines principles from thermodynamics and photosynthesis to convert light energy, typically from the sun, into useful work or energy. The name derives from the Carnot engine, which is an idealized heat engine that operates on the Carnot cycle and sets the theoretical maximum efficiency for any heat engine based on the temperatures of the heat reservoirs it operates between.
The term "compound of octahedra" typically refers to a geometric structure that consists of multiple octahedra arranged in a specific configuration. One common example is the compound made up of two interpenetrating octahedra, also known as the "double octahedron." In three-dimensional space, an octahedron is a polyhedron with eight triangular faces, twelve edges, and six vertices.
Resistive skin time (RST) is a term primarily used in the fields of neurology and psychophysiology to describe the time it takes for the skin's electrical resistance to reach a stable value after a stimulus is applied. This concept is often associated with measurements of skin conductance, where changes in skin resistance can indicate physiological and psychological responses to stimuli.
Indigenous statistics refers to the collection, analysis, and interpretation of data that relates specifically to Indigenous peoples and communities. This field recognizes the unique cultural, social, political, and economic contexts of Indigenous populations and emphasizes the importance of using methodologies that are respectful and culturally appropriate. Key aspects of Indigenous statistics include: 1. **Culturally Relevant Frameworks**: Indigenous statistics often draw on traditional knowledge systems and concepts that are relevant to Indigenous communities, integrating these with quantitative and qualitative data.
Mathematical and theoretical biology is an interdisciplinary field that applies mathematical techniques and theoretical approaches to understand biological systems and processes. This area of research is diverse, encompassing various aspects of biology, from ecology and evolutionary biology to population dynamics, epidemiology, and cellular biology. ### Key Components: 1. **Mathematical Modeling**: - Researchers create mathematical models to describe biological processes. These models can take various forms, including differential equations, stochastic models, and discrete models.
Polyhedral combinatorics is a branch of combinatorial optimization that studies the properties and relationships of polyhedra, which are geometric structures defined by a finite number of linear inequalities. In the context of optimization, polyhedral combinatorics primarily focuses on the following aspects: 1. **Polyhedra and Convex Sets**: A polyhedron is a geometric figure in n-dimensional space defined by a finite number of linear inequalities.
Sure! Let's break down the concepts of factorials and binomials. ### Factorial The factorial of a non-negative integer \( n \), denoted as \( n! \), is the product of all positive integers from 1 to \( n \). In other words, \[ n! = n \times (n - 1) \times (n - 2) \times \ldots \times 1 \] For example: - \( 5!
Cultural depictions of Nicolaus Copernicus, the renowned Renaissance astronomer who formulated the heliocentric model of the universe, vary across literature, art, film, and popular media, reflecting his profound influence on science and culture. Here are some notable aspects: 1. **Literature**: Copernicus has been the subject of various biographies, historical novels, and essays. Works often explore his scientific contributions and the resistance he faced from contemporary religious and scientific authorities.
Stephen Hawking, the renowned theoretical physicist, cosmologist, and author, has been depicted in various forms of media due to his significant contributions to science and his compelling personal story.
Communication physics is not a widely recognized field or term in the same way that areas like quantum communication or classical communication theory are. However, the term can be interpreted in a couple of ways depending on the context. 1. **Interdisciplinary Study**: It may refer to the study of how physical principles govern communication systems. This includes the principles of signal transmission, electromagnetic waves, and information theory.
Complementary experiments are a type of experimental design used in scientific research to validate findings, test hypotheses, or explore different facets of a research question from multiple viewpoints. The idea behind complementary experiments is to use different methods, approaches, or conditions to investigate the same underlying phenomenon, thereby gaining a richer and more comprehensive understanding of the issue at hand.
The Gardner-Salinas Braille codes refer to a specialized form of Braille that is used primarily for the transcription of music. These codes were developed to facilitate the reading and writing of musical notation in a tactile format for individuals who are visually impaired or blind. The codes are named after their creators, William Gardner and Edward Salinas, who developed a system to represent musical elements such as notes, rhythm, dynamics, and other features of musical scores through Braille symbols.

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