The Tridiminished rhombicosidodecahedron is a Archimedean solid and is a form of a polyhedron that can be described as a convex geometric shape. It is derived from the rhombicosidodecahedron, which is one of the Archimedean solids known for having 62 faces: 20 regular triangles, 30 squares, and 12 regular pentagons.
The truncated triakis tetrahedron is a type of Archimedean solid that can be derived from the triakis tetrahedron by truncating its vertices. It belongs to a category of solids that feature regular polygonal faces, and it is characterized by its unique geometric properties. ### Characteristics: - **Faces:** The truncated triakis tetrahedron has a total of 16 faces, which include 4 hexagonal faces and 12 triangular faces. - **Vertices:** It has 24 vertices.
Oligomers are short chains of monomers, which are small, repeating units that can combine to form larger molecules known as polymers. In chemistry, oligomers typically consist of a limited number of monomer units, generally ranging from two to around ten or twenty. They can be formed from various types of monomers, including sugars, amino acids, and other organic compounds. Oligomers can have distinct physical and chemical properties compared to their corresponding polymers.
The glass transition is a phenomenon observed in amorphous materials, such as glasses and certain polymers, characterized by a reversible change in physical properties as the temperature changes. It describes the process where a material transitions from a hard and relatively brittle "glassy" state to a more flexible "rubbery" state as it is heated. Key characteristics of the glass transition include: 1. **Temperature Range**: The glass transition temperature (Tg) is the temperature at which the transition occurs.
Micro-compounding generally refers to the process of creating very small-scale compounded pharmaceuticals or formulations that are typically prepared by a licensed pharmacist or a specialized compounding pharmacy. This practice allows for the customization of medications to meet the unique needs of individual patients, such as altering dosage forms, flavors, or delivery methods.
Poly(phthalaldehyde) (PPA) is a thermoplastic polymer known for its unique properties, such as high rigidity, thermal stability, and good chemical resistance. It is derived from phthalaldehyde, a compound that can polymerize to form this high-performance material. PPA has been studied for various applications, including in the production of engineering plastics and coatings, as well as composite materials. Its advantages include a high glass transition temperature and the ability to maintain mechanical strength at elevated temperatures.
The Newton polytope is a geometric object associated with a polynomial function, particularly in the context of algebraic geometry and combinatorial geometry. It provides a way to study the roots of a polynomial and the properties of the polynomial itself by examining the combinatorial structure of its coefficients.
Solvent Vapor Annealing (SVA) is a technique used to improve the properties of thin polymer films and other materials by utilizing the controlled exposure to solvent vapors. The process involves placing a polymer film in an environment containing the solvent in its vapor form, allowing the solvent to diffuse into the film.
Actuarial polynomials are specific mathematical tools used primarily in actuarial science, often in the context of modeling and calculating insurance liabilities, annuities, and life contingencies. They can be used to represent functions that describe various actuarial processes or outcomes.
Hudde's Rules refer to a set of guidelines used in organic chemistry for determining the stability of reaction intermediates, particularly carbocations and carbanions. These rules help predict the relative reactivity and stability of different carbocation species based on their structure and the substituents attached to them.
Geronimus polynomials are a class of orthogonal polynomials that arise in the context of discrete orthogonal polynomial theory. They are named after the mathematician M. Geronimus, who contributed to the theory of orthogonal polynomials. Geronimus polynomials can be defined as a modification of the classical orthogonal polynomials, such as Hermite, Laguerre, or Jacobi polynomials.
"Number: The Language of Science" is a book written by Tobias Dantzig, first published in 1930. In this work, Dantzig explores the historical and philosophical aspects of numbers and mathematics, presenting the case that numbers can be viewed as a universal language that enables scientists to describe the natural world. The book delves into the development of mathematical concepts, the significance of numbers in various scientific disciplines, and the intrinsic relationship between mathematics and the physical sciences.
National Security Study Memorandum 200 (NSSM 200) is a key document in U.S. foreign policy history, issued in December 1974 under the administration of President Gerald Ford. The memorandum was essentially a policy directive concerning population growth in developing countries and its implications for U.S. national security. The NSSM 200 report emphasized the need for the U.S. to consider the impact of rapid population growth on global stability and U.S. interests.
Population growth refers to the change in the number of individuals in a population over a specific period of time. It can be expressed as a percentage increase or decrease in population size and is influenced by factors such as birth rates, death rates, immigration, and emigration. ### Key Components of Population Growth: 1. **Birth Rate (Natality)**: The number of live births per thousand people in a given year.
Population growth projections refer to estimates of future population sizes based on current and historical demographic data, trends, and statistical models. These projections consider various factors, including birth rates, death rates, immigration, and emigration. There are different methods for projecting population growth, and these projections are often made for specific geographical areas, such as countries, regions, or cities.
In population biology, a "refugium" (plural: refugia) refers to a habitat or environment that provides a safe haven for certain species, allowing them to survive during periods of adverse conditions, such as climate change, natural disasters, or habitat destruction. Refugia play a crucial role in the conservation of biodiversity, as they can help preserve populations of species that might otherwise become extinct due to unfavorable environmental factors.
Populism is a political approach characterized by the idea of "the people" versus "the elite." It can manifest in various forms across different countries, often based on local contexts, issues, and historical backgrounds. Below is an overview of populism in several countries: ### 1. **United States** - **Political Figures:** Donald Trump, Bernie Sanders. - **Characteristics:** Anti-establishment rhetoric, appeals to working-class discontent, nationalism, and skepticism towards immigration and globalization.
Jeffersonian democracy is a political philosophy and framework associated with Thomas Jefferson, the third President of the United States and one of the Founding Fathers. This idea emphasizes several key principles and values: 1. **Agrarianism**: Jefferson believed that a nation of independent, land-owning farmers would provide a strong foundation for democracy. He thought that agriculture was vital for the sustenance of a free and virtuous society and that land ownership would lead to greater civic responsibility and involvement among citizens.
(307261) 2002 MS4 is an asteroid that is part of the main belt, which is the region of space between the orbits of Mars and Jupiter where a majority of the solar system's asteroids are found. This particular asteroid was discovered in June 2002 and is classified as a "main-belt asteroid" in the asteroid catalog.

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