The term "apparent place" can refer to different concepts depending on the context, particularly in astronomy and navigation. Here are a couple of interpretations: 1. **Astronomy**: In celestial mechanics, the "apparent place" of a celestial body is its position as observed from Earth, taking into account the effects of atmospheric refraction and other observational factors. This is in contrast to the "true place," which refers to the actual position of the celestial body in space without those distortions.
The Bessel ellipsoid refers to a specific mathematical model of the Earth's shape, which is used in geodesy and cartography. Named after the German mathematician and astronomer Friedrich Bessel, the Bessel ellipsoid is an oblate spheroid that approximates the shape of the Earth, particularly in relation to the geodetic surveys of the 19th century.
Clairaut's theorem is a principle in classical physics related to the gravitational field produced by a rotating body. It states that the gravitational potential at the surface of a rotating spheroid (like Earth) is constant along surfaces of constant gravitational potential. More specifically, for a rotating mass, Clairaut's theorem implies that the gravitational acceleration can be expressed as a function of both the distance from the center of the object and the angular velocity (rotation rate) of the object.
EarthScope is a scientific program that aims to study the structure and dynamics of the North American continent, with a focus on understanding earthquakes, volcanic activity, and the processes that shape the Earth's crust. Launched in 2003, the program is a collaborative effort involving multiple institutions, including the National Science Foundation (NSF), universities, and research organizations. One of the key components of EarthScope is the deployment of a network of high-precision seismic instruments and GPS stations across the continent.
The European Combined Geodetic Network (ECGN) is a geodetic framework established to provide a unified reference system for geospatial measurements across Europe. It combines various national and regional geodetic networks into a coherent structure, facilitating accurate and consistent positioning, navigation, and mapping. Key features of the ECGN include: 1. **Accuracy and Consistency**: The network provides high-precision geodetic data that serves various applications, including scientific research, infrastructure development, and environmental monitoring.
Interferometric Synthetic Aperture Radar (InSAR) is a remote sensing technique used to create high-resolution images of the Earth's surface and to measure ground deformation. It combines the principles of synthetic aperture radar (SAR) and interferometry to gain detailed insights into topography, land subsidence, tectonic activity, and other geological processes.
Geomatics is an interdisciplinary field that combines various techniques and technologies for collecting, analyzing, managing, and interpreting spatial and geographic data. It integrates elements from geography, surveying, cartography, remote sensing, geographic information systems (GIS), and global positioning systems (GPS). Key components of geomatics include: 1. **Surveying**: The process of measuring distances, angles, and elevations to determine the relative position of points on the Earth's surface.
A Geographic Coordinate System (GCS) is a system used to determine the position of a point on the Earth's surface using a coordinate system that is based on the Earth's shape. It provides a spatial reference framework by specifying the location of a point in terms of its latitude and longitude. ### Key Components of a Geographic Coordinate System: 1. **Latitude**: This measures how far north or south a point is from the equator, which is designated as 0° latitude.
The gravitational force of the Moon is significantly weaker than that of the Earth due to its smaller mass. The Moon's gravitational acceleration is approximately \(1.625 \, \text{m/s}^2\), which is about one-sixth that of Earth's gravitational acceleration (approximately \(9.81 \, \text{m/s}^2\)). This difference in gravitational pull is why objects on the Moon weigh much less than they do on Earth.
True-range multilateration (TRM) is a technique used to determine the position of an object or the location of a signal emitter by measuring the time it takes for a signal to travel to multiple receiving stations. This method is often employed in navigation and tracking systems, including aviation, maritime, and telecommunications. Here's how it works: 1. **Signal Emission**: An object emits a signal, such as a radio wave or acoustic signal.
The IBM 603 is an early vacuum tube-based computing device developed by IBM in the 1950s. It was a part of the IBM 600 series and went into production in 1957. Specifically, the IBM 603 was a fixed-point arithmetic unit designed to perform mathematical calculations for the IBM 704 computer.
The Remington Rand 409 refers to a model of typewriter produced by the Remington Rand company, which was a significant manufacturer of typewriters and office equipment in the 20th century. The Remington Rand 409 is known for its portable design and durability, characteristic of many typewriters produced during that era.
NYIT Bears lacrosse refers to the lacrosse team representing the New York Institute of Technology (NYIT), which is located in Old Westbury, New York. The team is part of NCAA Division II and competes in the East Coast Conference (ECC). The NYIT Bears lacrosse program has a history of participation in collegiate lacrosse, striving for excellence both on the field and academically. The team has been known for its commitment to developing players' skills and promoting teamwork and sportsmanship.
GEOS-3, or the Geostationary Operational Environmental Satellite-3, was an early weather satellite launched by NASA in 1975. It was primarily designed to provide continuous monitoring of weather patterns and environmental conditions from a geostationary orbit. GEOS-3 was equipped with advanced imaging and sounding instruments that enabled it to capture real-time data on cloud cover, temperatures, and other atmospheric phenomena.
The Reeds–Sloane algorithm is an approach in computer science, specifically in the field of algorithm design and geometric optimization. It provides a way to find the shortest path or the optimal sequence of operations for navigating a search space, often applied in problems related to robotics and motion planning. The algorithm is particularly notable for its application in situations where movements are constrained to a fixed set of directions or within a grid-like structure.
SC2000, also known as Schematic Capture 2000, is a software tool commonly used for electronic design automation (EDA). Specifically, it focuses on the schematic capture phase of circuit design, allowing engineers and designers to create and manage electronic schematics. The software may support functionalities such as simulation, layout, and design rule checking, making it easier to design and validate electronic circuits before moving to the physical layout stage.
Plutonyl typically refers to a compound containing plutonium in a specific oxidation state, often used in the context of nuclear chemistry. The term can denote plutonium in the +4 or +6 oxidation state, commonly appearing in plutonium dioxide (PuO₂) or plutonium trioxide (PuO₃) compounds. Plutonyl species, especially plutonyl ions, are important in processes involving the chemistry of actinides and nuclear waste management.
Geosat, or Geostationary Satellite, refers to a type of satellite that is placed in geostationary orbit, approximately 35,786 kilometers (22,236 miles) above the Earth's equator. Satellites in this orbit have a rotational period that matches the Earth's rotation, allowing them to remain fixed over a specific point on the Earth's surface.
As of my last knowledge update in October 2021, "GeoSpy" could refer to different concepts or tools related to geographic information systems (GIS), geolocation technologies, or data analytics, but there hasn't been a widely recognized platform or tool specifically known as "GeoSpy." It's possible that "GeoSpy" refers to a specific software application, a project, or a service that has emerged since then.
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





