A centered decagonal number is a type of figurate number that represents a pattern of points arranged in the shape of a decagon (a 10-sided polygon) with a center point. These numbers can be generalized for polygons with any number of sides.
The cutoff frequency, often denoted as \( f_c \), is a fundamental parameter in the field of signal processing and filter design. It refers to the frequency at which the output of a filter or a system begins to attenuate significantly compared to its response at lower frequencies. Typically, it marks the boundary between passband and stopband in a filter.
The Journal of Elastomers and Plastics is a scientific publication that focuses on research related to elastomers (rubbers) and plastics. It typically includes a range of articles covering topics such as the chemistry, physics, processing, and applications of elastomeric and plastic materials. The journal may publish original research articles, reviews, and technical notes that contribute to the understanding of material properties, behavior, and innovations in the field.
The number 83 is an integer that is commonly recognized as a prime number. This means that it has no divisors other than 1 and itself. In terms of properties, 83 is notable for its various mathematical and scientific applications: - **Mathematics**: It is the 23rd prime number and is located between the prime numbers 79 and 89. - **Chemistry**: The atomic number of bismuth, a chemical element, is 83.
Nanofoam is a type of material characterized by its highly porous structure at the nanoscale level. It typically consists of a matrix of solid material that is interspersed with a large number of voids or bubbles, which can reduce its density significantly. These pores can range from nanometers to micrometers in size and contribute to various unique properties of the material, such as lightweight characteristics, high surface area, and improved thermal or acoustic insulation.
An intake tower is a structure used in water management systems, particularly in dams or reservoirs, to facilitate the collection and transfer of water. The main functions of an intake tower include: 1. **Water Intake**: The primary purpose of an intake tower is to draw water from a reservoir or body of water for various uses, such as hydroelectric power generation, irrigation, or municipal water supply.
Herman Valentiner (1882–1947) was a Danish-American psychologist and a prominent figure in the field of experimental psychology. He was known for his work on the psychology of perception and was influenced by Gestalt psychology. His research often focused on the visual perception of objects and patterns, and he contributed to the understanding of how people perceive and interpret their surroundings.
"Robots by date" is not a specific term or concept widely recognized in popular literature or technology discussions. However, it could refer to a few different ideas depending on the context: 1. **Chronological Development of Robots**: This could involve looking at the history and evolution of robots, noting key milestones and developments over time.
Sergey Bozhevolnyi is a prominent figure in the field of physics, particularly known for his work in photonics and nanotechnology. He has contributed significantly to the understanding of light propagation in complex media, plasmonics, and metamaterials. His research often focuses on the interaction of light with nanostructures and the development of new optical devices.
Uncompressed video refers to video content that is stored and processed without any form of compression, meaning that every pixel of video data is captured in its original quality without any reduction in detail or information. Because it retains all of the visual information, uncompressed video offers the highest possible quality and is commonly used in professional video production environments where the utmost fidelity is required.
Sociobiology is an interdisciplinary field that examines the biological basis of social behavior in animals and humans. It was popularized by the biologist Edward O. Wilson in his 1975 book, "Sociobiology: The New Synthesis." The central premise of sociobiology is that social behaviors, such as mating patterns, altruism, and aggression, can be understood through the principles of evolutionary biology and natural selection.
James D. Wells is a theoretical physicist known for his research in the areas of particle physics and cosmology. His work often involves the study of theories beyond the Standard Model of particle physics, including topics like supersymmetry, extra dimensions, and dark matter. He has contributed to understanding the implications of various theoretical models and their connections to experimental observations. Wells has been associated with academic institutions, and his research is published in numerous scientific journals.
James E. McDonald (1920–2007) was an American physicist and atmospheric scientist known primarily for his work in atmospheric physics, including research on weather modification and the study of atmospheric phenomena. He gained some fame as a prominent ufologist in the 1960s and 1970s and was a significant figure in the study of unidentified flying objects (UFOs).
James Raymond Lawson is known as a prominent American civil rights leader, minister, and advocate for nonviolent social change. He was a key figure in the American civil rights movement during the 1960s, particularly in relation to the campaign against racial segregation and injustice. Lawson is often associated with the teachings of Mahatma Gandhi and was instrumental in introducing nonviolent resistance strategies to civil rights activists in the United States.
As of my last update in October 2021, there doesn't appear to be any widely recognized person, character, or concept known as "Mark Bolsterli." It's possible that this name pertains to a private individual, a recent development, or a less-publicized entity.
The name "Jon Mathews" could refer to multiple individuals, as it may not be a widely recognized figure. If you are referencing a specific Jon Mathews associated with a particular profession, achievement, or context (such as entertainment, sports, academia, etc.
Kenneth Stewart Cole, often referred to as Kenneth Cole, is an American fashion designer, entrepreneur, and activist known for his work in the footwear, apparel, and accessories industry. He founded Kenneth Cole Productions, which is widely recognized for its stylish shoes and other fashion items. The brand is particularly noted for its modern designs and has a strong presence in both casual and formal wear.
"Leigh Page" doesn’t refer to a widely recognized entity, person, or concept in popular culture, history, or current events as of my last knowledge update in October 2023. It could potentially be a name of a person, a brand, or a fictional character, but I would need more context to provide a specific answer. If you have additional information or if it's related to a particular field (like literature, music, etc.
Leo Brewer was a prominent American chemist known for his significant contributions to the fields of physical chemistry, materials science, and metallurgy. He was particularly recognized for his work on the properties of metal alloys, glasses, and disordered materials. Brewer had an extensive academic career, holding positions at various institutions and contributing to numerous scientific publications. Additionally, the term "Leo Brewer" may also refer to different contexts, including a name or brand that has specific meanings in other fields or industries.
Ralph Asher Alpher (1921–2007) was an American cosmologist and physicist, best known for his contributions to the Big Bang theory of the universe. He played a key role in the development of the theory of nucleosynthesis, which explains the formation of the light elements in the early universe.

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