Gram per cubic centimetre (g/cm³) is a unit of density, which measures how much mass of a substance is contained in a given volume. Specifically, it indicates how many grams of a substance are present in one cubic centimetre of that substance. 1 g/cm³ is equivalent to 1,000 kg/m³ in the metric system. The density of a substance can provide important information about its properties and behavior.
The classical electron radius, often denoted by \( r_e \), is a theoretical value that represents a length scale associated with the size of an electron based on classical physics principles. It can be derived from the electron's charge and mass, along with fundamental constants.
Electron mass by Wikipedia Bot 0
The mass of an electron is approximately \(9.109 \times 10^{-31}\) kilograms. In atomic mass units (amu), this is about \(5.485 \times 10^{-4}\) amu. The electron's mass is a fundamental property, essential for understanding various phenomena in physics and chemistry, such as atomic structure and the behavior of electrical currents.
Madelung constant by Wikipedia Bot 0
The Madelung constant is a numerical factor that arises in the study of ionic crystals, specifically in the calculation of the electrostatic potential energy of an ion in a crystal lattice. It quantifies the influence of all the other ions surrounding a particular ion on the potential energy of that ion due to Coulombic interactions. In ionic crystals, ions are arranged in a regular lattice structure, and each ion interacts with numerous other ions.
Physical constant by Wikipedia Bot 0
A physical constant is a quantity with a fixed value that does not change in time or space. These constants are fundamental in the laws of physics and are used to describe the properties of the universe. Examples of physical constants include: 1. **Speed of Light (c)** - Approximately \(299,792,458\) meters per second in a vacuum. 2. **Gravitational Constant (G)** - Approximately \(6.
Rydberg constant by Wikipedia Bot 0
The Rydberg constant is a fundamental physical constant that characterizes the wavelengths of spectral lines in many chemical elements, particularly hydrogen. It is named after the Swedish physicist Johannes Rydberg, who formulated a formula in the 1880s to predict the wavelengths of the spectral lines of hydrogen.
Cotyla by Wikipedia Bot 0
"Cotyla" could refer to several things depending on the context, but it is not widely recognized or established in common knowledge as of my last update in October 2023. It might refer to: 1. **Biological Term**: In biological contexts, "cotyla" can refer to a shallow, cup-shaped structure, such as a cavity or socket in anatomical terminology.
The Subject Alternative Name (SAN) is an extension to the X.509 specification that allows users to specify additional host names for a single SSL certificate. It was introduced to avoid the limitations of the Common Name (CN) field in SSL certificates. The SAN field can include multiple values, which may consist of: 1. **DNS Names**: Additional domain names (e.g., www.example.com, example.org). 2. **IP Addresses**: Specific IP addresses associated with the certificate.
Treyfer by Wikipedia Bot 0
As of my last knowledge update in October 2023, "Treyfer" does not appear to be a widely recognized term or concept. It could refer to a variety of topics depending on the context—such as a brand, a product, a username, or something specific within a certain community or industry.
Trustico by Wikipedia Bot 0
Trustico is a company that specializes in providing digital security solutions, particularly in the realm of SSL (Secure Socket Layer) certificates. SSL certificates are essential for securing online communications by encrypting data exchanged between a user's browser and a web server. Trustico offers various types of SSL certificates, including single-domain, multi-domain, and wildcard certificates. In addition to SSL certificates, Trustico may offer other services related to website security, such as domain validation, secure email, and code signing certificates.
Disk encryption theory refers to the principles and techniques used to protect data stored on physical storage devices, like hard drives or SSDs, by converting it into a format that cannot be read without proper authorization. The main goals of disk encryption are to maintain data confidentiality, prevent unauthorized access, and protect sensitive information from theft or loss.
USB flash drive security refers to the measures and practices implemented to protect data stored on USB flash drives from unauthorized access, loss, theft, or malware. Given that USB drives are portable and easily transferable, they can pose significant risks to data security if not properly managed.
World War II Japanese cryptography refers to the cryptographic methods and systems used by Japan during World War II for secure communication. The Japanese military and government employed various techniques to encode and decode messages, some of which were highly sophisticated. Key aspects of Japanese cryptography during this period include: 1. **Cipher Machines**: The Japanese used several cipher machines, the most notable being the **Purple machine** (JN-25). This machine was an electro-mechanical device used to encrypt diplomatic messages.
BATCO by Wikipedia Bot 0
BATCO (Banting and Tavares Clinical Outcomes) is an acronym that could refer to a variety of contexts, but without specific context, it might not provide a definitive answer. If you are asking about a specific organization, program, or concept known as BATCO, please provide further details. Alternatively, it could refer to something specific in a certain field such as technology, sports, healthcare, or business.
CAVNET by Wikipedia Bot 0
CAVNET (CAVility NETwork) is a network focused on exploring and promoting the benefits of connected and automated vehicles (CAVs). It serves as a platform for stakeholders, including researchers, policymakers, industry experts, and the public, to collaborate on CAV-related topics. The network typically aims to address challenges, share best practices, conduct research, and develop standards related to the deployment and operation of connected and automated vehicle technologies.
Code talker by Wikipedia Bot 0
The term "Code Talker" refers to members of certain Native American tribes, particularly during World War I and World War II, who were recruited by the U.S. military to use their native languages as a means of secure communication. The most famous Code Talkers were Navajo, who developed a complex code based on the Navajo language that was used to transmit secret messages, making it difficult for enemy forces to understand.
Crypto Wars by Wikipedia Bot 0
The term "Crypto Wars" refers to the ongoing debate and conflict around the use of cryptography in communications, particularly concerning government regulation, privacy, and security. This term has both historical and contemporary connotations. Historically, the Crypto Wars can be traced back to the 1990s when the U.S. government attempted to regulate the use of strong encryption technologies.
"Encryption by date" is not a widely recognized or standard term in the field of cryptography. However, it may refer to a few concepts that involve the use of date-related information in encryption processes. 1. **Key Generation Based on Date**: Some encryption algorithms might use the date as a part of the key generation process. For example, a system might generate a unique encryption key based on the current date, which could be used for securing data.
German submarine U-505 is one of the most famous U-boats from World War II. It was a Type IXC U-boat of the Kriegsmarine (German Navy) and was notable for being the first U-boat captured by the United States Navy on the high seas.
Speck (cipher) by Wikipedia Bot 0
Speck is a family of lightweight block ciphers designed by the National Security Agency (NSA) of the United States. It was introduced in 2013 and is particularly suited for constrained environments such as embedded systems, Internet of Things (IoT) devices, and other resource-limited applications. ### Key Features of Speck: 1. **Lightweight Design**: Speck is designed to be efficient in both hardware and software implementations.

Pinned article: ourbigbook/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 5. . 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.
  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