Absorbance is a measure of how much light is absorbed by a sample when light passes through it. It is a dimensionless quantity used in various fields, notably in chemistry and biology, to quantify the concentration of a substance in a solution. Absorbance (A) is defined by the Beer-Lambert Law, which states that absorbance is directly proportional to the concentration of the absorbing species in the solution and the path length of the light traveling through the sample.
Cleon can refer to various topics depending on the context. Here are a few possibilities: 1. **Historical Figure**: Cleon was a prominent Athenian general and political figure during the Peloponnesian War. He was known for his populist leadership and aggressive military strategies. 2. **Cleon (Software)**: In the realm of technology, Cleon may refer to a specific software or platform.
Naomi Leonard is a prominent figure in the field of robotics and dynamic systems. She is known for her work in controlling and programming complex systems, including robotic systems and their applications in various domains such as autonomous vehicles and biological systems. Leonard is a professor at Princeton University, where she specializes in mechanical and aerospace engineering, as well as environmental engineering.
The National Graphene Institute (NGI) is a research facility located in Manchester, England, dedicated to the study and development of graphene and other two-dimensional materials. Established in 2015, it is part of the University of Manchester and aims to facilitate collaboration between researchers, industry, and other stakeholders to accelerate the commercialization of graphene-based technologies.
The National Bureau of Statistics of the Republic of Moldova (Biroul Național de Statistică al Republicii Moldova) is the official government agency responsible for collecting, analyzing, and disseminating statistical information in Moldova. Its primary functions include: 1. **Data Collection**: Gathering data on various aspects of the economy, population, and society, including demographic statistics, economic performance, social indicators, and more.
The National Center for Earth-surface Dynamics (NCED) is a research organization in the United States that focuses on the study of earth-surface processes and the dynamics of landscapes. It was established to advance understanding of how natural and human-induced changes affect the Earth's surface over time. The center brings together researchers from various disciplines, including geology, hydrology, engineering, geography, and environmental science, to collaborate on studies related to erosion, sediment transport, landscape evolution, and water resource management.
The National Centre for Science Information (NCSI) is an institution based in India, established to support and promote the dissemination and management of scientific information. It is associated with the Indian Institute of Science (IISc) in Bengaluru. The primary objectives of NCSI include: 1. **Information Services**: NCSI provides access to a wide range of scientific literature, databases, and information resources to researchers, scholars, and institutions.
The National Defense Research Committee (NDRC) was established in the United States in 1940 as a research and development organization to support the country's military capabilities during World War II. It was formed under the auspices of the National Defense Act and aimed to coordinate efforts among various scientific and technical organizations to develop new technologies and solutions for defense needs. The NDRC played a significant role in the wartime efforts by funding and managing research projects that addressed critical military requirements.
A recursive function is a function that calls itself in order to solve a problem. This approach allows the function to break down complex problems into simpler, more manageable sub-problems. Recursive functions usually have two main components: 1. **Base Case**: This is a condition under which the function will stop calling itself, preventing infinite recursion and ultimately leading to a result.
The National Inspection Council for Electrical Installation Contracting (NICEIC) is a regulatory body in the United Kingdom that oversees the electrical contracting industry. It was established to ensure that electrical installations are safe, compliant with relevant regulations and standards, and are carried out by qualified professionals. NICEIC provides a certification scheme for electrical contractors, allowing them to demonstrate their competence and compliance with safety standards.
The National Institute of Statistics (Institutul Național de Statistică or INS) is the government agency in Romania responsible for collecting, processing, and disseminating statistical data about the country's economy, population, and society. Established in 1869, the institute plays a crucial role in providing reliable and objective statistical information that supports government decision-making, research, and public understanding of various demographic and economic trends.
The National Meteorological and Hydrological Service of Peru, known in Spanish as "Servicio Nacional de Meteorología e Hidrología del Perú" (SENAMHI), is the government agency responsible for monitoring and forecasting meteorological, hydrological, and climatic conditions in Peru. Its primary objectives include: 1. **Weather Forecasting**: SENAMHI provides forecasts and warnings related to weather conditions, including temperature, precipitation, and severe weather events such as storms and floods.
The National Weather Service (NWS) office in Boston, Massachusetts, is a branch of the National Oceanic and Atmospheric Administration (NOAA) that provides weather forecasts, warnings, and other meteorological services for the Boston metropolitan area and surrounding regions in Massachusetts and parts of New England. The office's primary functions include: 1. **Weather Forecasting**: Producing daily weather forecasts, including temperature, precipitation, wind, and severe weather conditions.
In biology, naturalization refers to the process by which a species that is not originally from a particular ecosystem becomes established and thrives in that environment. This term is often used in the context of non-native or invasive species that adapt to new habitats and ecosystems after being introduced, whether intentionally or accidentally, by human activity. The naturalization process involves several stages: 1. **Introduction**: The species is introduced to a new environment.
Nature Reviews Materials is a peer-reviewed scientific journal that focuses on the field of materials science. It is part of the Nature Portfolio, which includes various high-impact journals across different scientific disciplines. Established in 2016, Nature Reviews Materials publishes review articles that summarize and analyze the latest developments in materials science, including topics such as nanomaterials, biomaterials, electronic materials, and materials for energy applications.
A Regional Internet Registry (RIR) is an organization that is responsible for the allocation and management of Internet number resources within a specific geographical area. These resources primarily include Internet Protocol (IP) address space and Autonomous System Numbers (ASNs). RIRs play a crucial role in distributing IP addresses to Internet Service Providers (ISPs), businesses, and other organizations within their regions.
Nazareth Bank is a financial institution that offers a variety of banking services. However, as of my last update, there is limited information available specifically about Nazareth Bank, which might indicate that it is a smaller or regional financial institution or that it operates in a specific locality.
Neighbor-net is a computational method used in phylogenetics to construct phylogenetic networks, which represent the evolutionary relationships among a set of species or sequences. Unlike traditional tree-based representations, which assume that evolution occurs in a strictly branching fashion, Neighbor-net can accommodate more complex evolutionary histories that may include events such as hybridization, horizontal gene transfer, or reticulate evolution.
Neil Robertson is a prominent mathematician known for his work in graph theory and combinatorics. He is particularly recognized for his contributions to the field of graph minors, a concept he developed along with his collaborator Paul D. Seymour. They are best known for the Robertson-Seymour theorem, a groundbreaking result that characterizes graph minor-closed properties through a structure theorem involving a well-defined family of graphs.
NEMA (National Electrical Manufacturers Association) connectors are a type of electrical plug and receptacle standardized by the NEMA organization to ensure safety and interoperability of electrical devices. These connectors are commonly used in North America for various applications, from household appliances to industrial equipment. NEMA connectors are categorized by a combination of letters and numbers, indicating their specific configurations, characteristics, and intended uses.

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