Rolf Maximilian Sievert was a Swedish physician and medical physicist known for his significant contributions to the field of radiation and radiology. Born on May 6, 1896, in Sweden, he is best known for developing the "sievert" (Sv), a unit of measurement used to quantify the biological effects of ionizing radiation on human tissue. The sievert is an important unit in radiation protection and is used to assess the health risks associated with exposure to radiation.
The term "Chronozone" can refer to various concepts depending on the context, but it is most commonly associated with geology and paleontology. In these fields, a chronozone is a specific time interval during which a distinct set of geological or fossil records can be identified. It is often used to define layers of sediment or rock that correspond to particular periods in Earth's history, allowing scientists to study changes in climate, biology, and geology over time.
In mathematics, "ramification" typically refers to the way a mathematical object behaves as it is extended or generalized, often in the context of field theory or algebraic geometry. The term is used in a few specific contexts, notably in: 1. **Field Theory**: In the context of number fields or function fields, ramification describes the behavior of prime ideals in an extension of fields.
The Sothic cycle refers to a period of time in ancient Egyptian chronology that is based on the heliacal rising of the star Sirius (known as Sothis in Greek). This event occurs when Sirius first becomes visible in the eastern dawn sky just before sunrise, typically aligned with the annual flooding of the Nile River, which was crucial for agriculture in ancient Egypt.
An hour is a unit of time commonly used to measure longer durations. It is equal to 60 minutes or 3,600 seconds. In the context of timekeeping, an hour is typically represented on a 12-hour or 24-hour clock. The hour has been a fundamental unit of time for centuries and is widely used in daily life, scheduling, and various fields, including science and commerce.
The term "Millennium" can refer to several contexts, each with its own significance: 1. **Historical Context**: In a historical or chronological context, a millennium is a period of 1,000 years. The term is often used to refer to significant events that occur at the turn of a millennium, such as the transition from the year 1999 to 2000.
"Pahar" can refer to different concepts depending on the context, but it is primarily known in South Asian countries like India, Nepal, and Pakistan as the word for "mountain" or "hill" in Hindi and several other languages. In a broader cultural context, "Pahar" can also refer to: 1. **Geographical Feature:** It typically refers to a hilly or mountainous area.
"Relative hour" typically refers to a way of measuring time in relation to a specific event or reference point rather than using standard clock time. This concept can be applied in various contexts, such as scheduling, project management, or in certain scientific and academic discussions. In the context of project management, for example, a relative hour might mean the amount of time measured from the current time until a deadline or a milestone. Instead of saying "3 PM," one might say "3 relative hours from now.
"Samayā" is a term used in various spiritual and philosophical contexts, primarily within Hinduism and Buddhism. Its meaning can vary slightly depending on the tradition: 1. **In Hinduism**: "Samayā" may refer to a specific time or occasion, often relating to rituals or spiritual practices. It can imply an auspicious time for performing certain actions or the notion of timelessness in a spiritual context.
A cubic inch is a unit of volume that is equivalent to the volume of a cube with edges that are each one inch long. It is commonly used in the United States to measure small volumes, particularly in contexts like engine displacement in automobiles, packaging, and manufacturing.
Matter is anything that has mass and occupies space. It is composed of particles, which can be atoms or molecules, and it exists in various states, primarily solid, liquid, and gas. In some contexts, it can also include plasma, which is a high-energy state of matter where electrons are separated from atoms. Matter has properties such as volume, density, and viscosity, and it can undergo physical and chemical changes.
Concurrent Computer Corporation, often referred to simply as Concurrent, is a company that specializes in providing real-time computing solutions. Founded in 1966, it has been involved in the development of computer systems and software aimed at applications requiring high performance and reliability, particularly in sectors such as telecommunications, military, and industrial automation. Historically, Concurrent has been known for its real-time operating systems, development tools, and hardware platforms.
"Firlot" is an old Scottish unit of measurement that was used primarily for measuring dry volume, particularly for grains and other agricultural products. One firlot is typically considered to be equivalent to about 1.4 bushels or approximately 160 liters, although the exact volume can vary by region and depending on the specific product being measured. The firlot was more commonly used in historical contexts and is not a standard unit of measurement in modern systems.
The Gallon (Scots), also known as the Scottish gallon, is a historical unit of volume measurement that was used in Scotland. It is based on the wine gallon, which was commonly used in England. The Scots gallon is approximately equal to 4.5 liters or about 1.19 U.S. gallons. The Scots gallon differs from the imperial gallon, which is used in the United Kingdom, and is equal to approximately 4.546 liters.
"Kezayit" (Hebrew: כזית) is a term in Jewish law that refers to a volume measurement equivalent to the size of an olive. It is often used in discussions regarding dietary laws (kashrut) and the consumption of foods, especially in relation to the amount necessary for certain religious obligations or prohibitions.
"Nipperkin" can refer to a couple of different things, depending on the context: 1. **Historical Measurement**: Traditionally, a nipperkin is a small cup or a small measure of liquid, typically used for serving spirits or liquor. It's a somewhat archaic term and isn't frequently used in modern language. 2. **Literary Reference**: In literature, "Nipperkin" might appear in various contexts, often as a character name or a colloquial term.
Uruguayan mathematicians in the 21st century have made contributions across various fields of mathematics, including algebra, topology, and mathematical physics. Some notable mathematicians from Uruguay include: 1. **Luis C. G. de Melo** – Known for his work in dynamical systems and mathematical physics. 2. **Julio C. C. G. de Oliveira** – Noteworthy for contributions in applied mathematics and statistics. 3. **Jorge A. J. A.
"Space Travel" could refer to various video games focused on the theme of space exploration, trading, and combat in a sci-fi setting. However, without more specific details, it's difficult to pinpoint a particular game titled "Space Travel." In general, space travel games often involve players piloting spacecraft, exploring different planets, engaging in trade, or battling other players or NPCs.
Harris Computer Systems, often simply referred to as Harris, is a company that specializes in providing software solutions and services primarily for the public sector. Founded in 1976 and headquartered in Ottawa, Canada, Harris focuses on developing software for various industries, including utilities, public safety, and local government. The company's offerings include enterprise resource planning (ERP) solutions, utility billing systems, public safety software, and various other applications designed to streamline operations and improve efficiency for municipalities and organizations.
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!
Intro to OurBigBook
. Source. We have two killer features:
- 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-calculusArticles 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/derivativeVideo 2. OurBigBook Web topics demo. Source. - 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.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
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. - Infinitely deep tables of contents:
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





