A pressure-fed engine is a type of rocket engine that utilizes pressurized propellants to deliver fuel and oxidizer to the combustion chamber. In this system, the propellants are stored in tanks under pressure, and this pressure forces the propellants through the engine’s feed lines and into the combustion chamber, where they are ignited to produce thrust.
A pressure experiment typically refers to a scientific investigation that involves the manipulation and measurement of pressure in a controlled environment to study its effects on various materials, systems, or processes. Pressure experiments can be conducted in various fields, including physics, chemistry, biology, and engineering, and can involve gases, liquids, or solids.
The Association for Borderlands Studies (ABS) is an academic organization dedicated to promoting scholarship on borderlands, focusing on the interactions, cultures, economies, and politics of regions that lie at the edges of national boundaries. Established in the late 20th century, it brings together researchers, practitioners, and students from various disciplines to explore the complexities associated with borders, including issues of migration, identity, trade, and conflict.
Asteroid spectral classes are classifications used to categorize asteroids based on their reflectance spectra, which is the way they reflect sunlight. These spectral characteristics provide insights into their composition, structure, and sometimes their origins. The most common asteroid spectral classes are based on the taxonomy developed by the asteroid community, primarily the Tholen and Bus-DeMeo classifications.
The University of Cambridge has a strong reputation in the field of astronomy and astrophysics. It is home to several departments and research centers that focus on various aspects of astronomical research, including observational astronomy, theoretical astrophysics, and cosmology. The Institute of Astronomy at the University of Cambridge is one of the key institutions where astronomers conduct research, collaborate on projects, and engage in education.
GÉANT is a high-speed research and education network that connects national research and education networks (NRENs) across Europe and beyond. It facilitates collaboration and data transfer among researchers, institutions, and organizations in the academic sector, providing a backbone for advanced internet services and applications. GÉANT supports a range of activities, including high-capacity data transfers, collaboration on scientific projects, and the deployment of innovative technologies.
"Astronomia Nova" is a significant work in the history of astronomy, written by the Danish astronomer Tycho Brahe and published in 1609. In this book, Brahe presents his observations of the planets and discusses his model of the solar system, which was a hybrid model between the geocentric (Earth-centered) and heliocentric (Sun-centered) systems.
An astronomical transit refers to the event when one celestial body passes in front of another, as observed from a particular vantage point, typically from Earth. This phenomenon can occur among various celestial objects, such as planets, moons, or even stars. The most common types of transits are: 1. **Planetary Transit**: This occurs when a planet passes directly between a star and an observer, causing a temporary dimming of the star's light.
Gelenbevi Ismail Efendi, also known as Gelenbevi Ismail or simply Ismail Efendi, was a prominent figure in the late Ottoman Empire, particularly noted for his contributions to the field of education, especially in relation to modernizing and reforming the educational system in Turkey. He is particularly associated with the title of "Gelenbevi," which refers to his origins in the town of Gelenbe in present-day Turkey.
Atish Dabholkar is an Indian mathematician known for his work in the field of geometry, particularly in the areas of algebraic geometry and topology. He has made significant contributions to various mathematical concepts and has published numerous research papers. In addition to his research, Dabholkar has been involved in teaching and mentoring students in mathematics.
The Atiyah conjecture on configurations is a mathematical statement concerning the representation theory of algebraic structures, specifically related to bundles of vector spaces over topological spaces. It is named after the British mathematician Michael Atiyah, who has made significant contributions to several areas of mathematics, including topology, geometry, and mathematical physics.
The Atlantic Biogeographic Region is a biogeographic area characterized by unique ecological and biological features, primarily associated with the Atlantic Ocean and its coastal and marine environments. It encompasses a variety of habitats, including coastal wetlands, estuaries, marine ecosystems, and various terrestrial ecosystems adjacent to these water bodies. This region is significant for its biodiversity, hosting numerous species of plants and animals, many of which are adapted to the specific conditions of the Atlantic environment.
The term "Global Brain" can refer to several concepts, depending on the context in which it is used. Here are the most common interpretations: 1. **Collective Intelligence**: The Global Brain concept often describes the collective intelligence that emerges from the interactions and connections among individuals worldwide, facilitated by technology and the internet.
Environmental modeling refers to the process of creating representations or simulations of environmental systems to understand, analyze, and predict environmental processes and phenomena. This can be achieved through the use of mathematical, statistical, or computational models to represent complex interactions within ecosystems, atmospheric conditions, water systems, and other components of the environment.
Term invented by Ciro Santilli, similar to "nuclear blues", and used to describe the feeling that every little shitty job you are doing (that does not considerably help achieving AGI) is completely pointless given that we are likely close to AGI as of 2023.
Polymer physics is a branch of condensed matter physics that focuses on the physical properties and behavior of polymers—large molecules composed of repeating structural units known as monomers. Polymers can include natural substances like proteins and cellulose, as well as synthetic materials such as plastics and rubber. Key areas of study within polymer physics include: 1. **Structure and Morphology**: Understanding the arrangement of polymer chains and how their structure affects properties.
Fractional-order control refers to a control strategy that utilizes fractional-order calculus, which extends traditional integer-order calculus to non-integer (fractional) orders. This approach allows engineers and control theorists to model and control dynamic systems with a greater degree of flexibility and complexity than traditional integer-order controllers.
A function tree is a visual representation that illustrates how various functions or components of a system relate to one another. It is often used in project management, software development, and organizational contexts to break down complex tasks, processes, or systems into simpler components or functions.
A Hermite spline is a type of piecewise-defined curve that is particularly useful in computer graphics and animation for smoothly interpolating between two or more points. The defining characteristic of Hermite splines is that they are defined by their endpoints and associated tangents (or derivatives) at these endpoints. This makes them versatile for creating smooth curves that pass through specified points with controlled slopes.
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!
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 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.Figure 3. Visual Studio Code extension installation.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. - 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