Arm refers to a geographic term that designates a section of land or water that extends from a larger body. It can be used in various contexts, such as describing a river's tributary or a part of a bay or inlet. For example, the "Arm" might refer to a narrow part of a body of water that extends into the land, adding complexity to the coastline or landscape.
A beach ridge is a landform typically found along coastlines, formed by the accumulation of sand or other sediment deposited by wave and wind actions. These ridges are often created during periods of high water levels or storm surges, when waves push materials onto the beach. Over time, as the water level recedes, the sediment can form elongated, linear features parallel to the shore.
A chenier is a coastal landform that consists of a ridge or mound of sand, silt, or clay that is typically elongated and parallels the shoreline. Cheniers are formed by the accumulation of sediments deposited by waves and currents, often during low-energy conditions, and they can act as natural barriers against storm surges and coastal erosion.
The term "Coast" can refer to several different concepts depending on the context: 1. **Geographical Term**: In geography, a coast refers to the land along the edge of a sea, ocean, or other large body of water. Coasts can be rocky, sandy, or marshy and are often significant for human activities such as trade, tourism, and settlement.
"Fajã" is a term typically used in the Azores, an archipelago belonging to Portugal, to describe a flat, often fertile area that has formed at the base of a cliff or along the coastline. These areas are usually created by volcanic activity and erosion and can be quite important for agriculture due to their rich soil. Fajãs are characterized by their unique landscapes, which may include terraces for farming and are often home to specific types of flora and fauna adapted to the environment.
"Presque Isle" can refer to several different things, depending on the context: 1. **Geographical Areas**: Presque Isle is a name commonly used for places in North America, particularly in the United States. One of the most well-known is Presque Isle State Park, located in Erie, Pennsylvania. This park is situated on a long, narrow peninsula that extends into Lake Erie and is known for its natural beauty, recreational activities, and wildlife.
The Moaning Sandbar, also known as the Moaning Sands or Moaning Sand, is a phenomenon found in certain coastal areas, particularly where sandbars or sandbanks develop. This sandbar is notable for the unique sounds it produces when wind or water moves across it, often described as a moaning or booming noise. The sounds are created by the vibration of the sand grains as they interact with each other and the air or water.
A rocky shore is a coastal area characterized by numerous rocks and boulders, as well as varying degrees of tidal and wave action. This type of shoreline is typically found in places where geological factors have shaped the land, such as cliffs, headlands, and coves.
Salt pans and salt pools are both related to the evaporation of water to harvest salt, but they refer to different aspects of salt production. ### Salt Pans - **Definition**: Salt pans are shallow, flat areas where seawater or saline water is trapped and allowed to evaporate. They are usually made of clay, concrete, or earth, and designed to retain water for the purpose of salt extraction.
Raspberry Pi Pico by Ciro Santilli 37 Updated 2025-07-27
Some key specs:
A volcanic arc is a curving chain of volcanoes that typically forms along the boundary between two tectonic plates, usually at a convergent plate boundary where one plate is subducting beneath another. This process occurs when an oceanic plate descends into the mantle beneath a continental plate or another oceanic plate. As the subducting plate descends, it experiences increasing temperatures and pressures, leading to the melting of mantle rocks and the release of magma.
Sheaf cohomology is a fundamental concept in algebraic geometry and topology that provides a way to study the properties of sheaves on topological spaces or schemes. It serves as a powerful tool for capturing global sections of sheaves and understanding their finer structures. ### Key Concepts 1.
Dolbeault cohomology is a mathematical concept that arises in the field of complex differential geometry and algebraic geometry. It provides a way to study the properties of complex manifolds by using differential forms. In essence, Dolbeault cohomology is a specific kind of cohomology theory that is particularly suited to complex manifolds. While ordinary cohomology deals with real-valued differential forms, Dolbeault cohomology focuses specifically on complex-valued differential forms.
Cold injury refers to a range of medical conditions caused by exposure to cold temperatures, which can lead to damage to skin and underlying tissues. The most common types of cold injuries include: 1. **Frostbite**: This occurs when skin and underlying tissues freeze. It typically affects extremities like fingers, toes, ears, and the nose.
Group cohomology is a mathematical tool used in algebraic topology, group theory, and various other areas of mathematics. It provides a way to study the properties of groups using cohomological methods, which are analogous to those used in homology theory but focus on the algebraic structure associated with groups.
Cold waves refer to a severe drop in temperature over a wide area in a short period of time. They are characterized by extreme cold conditions that can lead to significant impacts on health, agriculture, and infrastructure. Cold waves are typically defined by a combination of low temperatures and a sustained period of cold weather, often accompanied by strong winds, which can exacerbate the chilling effects.
Harmattan is a dry and dusty trade wind that blows from the Sahara Desert over the West African region, typically occurring between late November and mid-March. It is characterized by its lower humidity and cooler temperatures, often bringing significant drops in temperature during the night. The winds carry fine dust particles, which can reduce visibility, affect air quality, and contribute to health issues, particularly for people with respiratory problems.
The "Pole of Cold" refers to a location that experiences the lowest recorded temperatures on Earth. The term is most commonly associated with the region around the village of Oymyakon in Siberia, Russia, which holds the record for the lowest officially recorded temperature in the Northern Hemisphere: -67.7°C (-89.9°F) recorded in 1933.
The NCAA Division I Men's Basketball Tournament Final Four consists of the four teams that win their respective regional brackets and advance to the national semifinals.

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