Bulgaria is divided into 28 administrative divisions known as provinces (or regions). Each province is further subdivided into municipalities. Here is a list of the provinces of Bulgaria: 1. **Blagoevgrad** (Благоевград) 2. **Burgas** (Бургас) 3. **Varna** (Варна) 4. **Veliko Tarnovo** (Велико Търново) 5.
Dolneni Municipality is an administrative region located in North Macedonia. It is part of the Vardar Statistical Region and encompasses the town of Dolneni, which is the administrative center of the municipality. The municipality includes several villages and is characterized by a mix of agricultural land, rural landscapes, and small local communities. Dolneni Municipality is known for its local culture, traditions, and history, as well as its role in the larger context of North Macedonia's governance and social structure.
County Dublin is one of the thirty-two counties of Ireland, located in the province of Leinster. It surrounds the capital city of Dublin, which is also the largest city in Ireland. County Dublin is known for its rich history, cultural heritage, and vibrant urban and rural areas. The county is divided into several administrative areas, including Dublin City, Dún Laoghaire-Rathdown, Fingal, and South Dublin, each with its own local government structure.
The Mid-West Region of Ireland is one of the regions designated for administrative purposes within the country. It primarily includes the counties of Clare, Limerick, and Tipperary. The region is characterized by its diverse geography, which ranges from rolling hills and rivers to scenic coastlines along the Shannon River and the Atlantic Ocean.
Mogila Municipality is a municipality located in the southwestern part of North Macedonia, within the Vardar region. It is primarily known for its rural landscape and agricultural activities. The municipality includes the town of Mogila, as well as several surrounding villages. The area is characterized by a mix of cultural influences, reflecting its history and the diverse communities that inhabit it. The local economy is generally based on agriculture, with residents engaged in farming and related activities.
Prilep Municipality is a municipal administrative unit located in the Republic of North Macedonia. It encompasses the city of Prilep, which serves as the administrative center of the municipality and is one of the country's notable urban areas. Prilep is known for its rich history, cultural heritage, and economic activities, particularly in tobacco production and manufacturing. The municipality includes several surrounding villages and has a diverse population that contributes to its cultural fabric.
(145480) 2005 TB190 is a near-Earth object (NEO) that belongs to the category of asteroids. Specifically, it is classified as an Apollo asteroid, which means that its orbit crosses Earth's orbit. The object was discovered in 2005, as indicated by its designation. Like other NEOs, (145480) 2005 TB190 is of interest to astronomers and planetary scientists.
(230965) 2004 XA192 is an asteroid that is part of the asteroid belt located between Mars and Jupiter. It was discovered in 2004 and is classified as a near-Earth object (NEO) due to its orbit bringing it relatively close to Earth's path around the Sun.
(455502) 2003 UZ413 is a trans-Neptunian object (TNO) and a member of the Kuiper Belt, which is a region of the Solar System beyond the orbit of Neptune that is populated with many small icy bodies. This specific object was discovered in 2003 and is classified as a centaur due to its size and characteristics.
(472271) 2014 UM33 is an asteroid that belongs to the main belt of asteroids in our solar system. It was discovered in October 2014, and it is classified as a member of the "Jupiter trojans" due to its orbital characteristics. Asteroids like 2014 UM33 are of interest to scientists because they can provide insights into the early solar system's conditions and the formation of planetary bodies.
(523674) 2013 MA12 is a near-Earth object (NEO), specifically categorized as an asteroid. It is part of the Apollo group of asteroids, which have orbits that cross Earth's orbit. The designation includes the year of its discovery (2013) and a unique numerical identifier (MA12) assigned during the cataloging process.
(527603) 2007 VJ305 is a classified asteroid that is part of the main belt of asteroids in our solar system. Identified by the Minor Planet Center, it was discovered in 2007. Like many asteroids, it can provide valuable information about the early solar system since they are considered remnants from the formation of the solar system approximately 4.6 billion years ago.
(78799) 2002 XW93 is a numerical designation for a specific asteroid that is part of the asteroid belt, which is located between the orbits of Mars and Jupiter. This asteroid was discovered in 2002 and received a provisional designation before being assigned a permanent number, 78799. Asteroids like 2002 XW93 are studied for various reasons, including their composition, size, and potential risk they might pose to Earth.
Pancake ice refers to a type of ice formation found on the surface of water bodies, typically in cold regions. It consists of rounded, flat pieces of ice that resemble pancakes, hence the name. This phenomenon usually occurs in the early stages of ice formation, where ice crystals break and then re-freeze into these disc-like shapes as wind and water movement cause them to bump into each other.
Rotten ice refers to a particular condition of ice that occurs when it becomes weak, unstable, or compromised due to factors such as melting, deterioration, or water saturation. This type of ice can appear slushy or has a crumbling texture, indicating that it is no longer solid or safe for activities such as walking, skating, or snowmobiling. The term can also describe ice that has been affected by warm weather or when water seeps into cracks and freezes, creating a less stable structure.
Sea ice microbial communities refer to the diverse assemblages of microorganisms, including bacteria, archaea, viruses, and microalgae, that inhabit and thrive within the sea ice environment. These communities play crucial roles in the polar ecosystems, as they are integral to biogeochemical processes and contribute to the overall productivity of the marine food web.
A bimorph is a type of actuator or sensor that consists of two layers of materials with different expansion properties, typically bonded together. When an electrical voltage is applied across the bimorph structure, the difference in expansion or contraction between the two materials causes the bimorph to bend or deform. This principle is often used in applications like piezoelectric devices, where the bimorph can convert electrical energy into mechanical motion or vice versa.
Backscatter refers to the phenomenon where radiation, particles, or waves that are emitted or transmitted from a source are reflected or scattered back toward the source or in other directions. It can occur in various contexts, including physics, telecommunications, and imaging systems. Here are a few specific contexts in which backscatter is commonly discussed: 1. **Physics and Particle Physics**: In particle physics, backscatter refers to the deflection of particles, such as electrons or photons, when they collide with matter.
The Rayleigh–Gans approximation is a theoretical framework used in scattering theory, particularly to analyze how electromagnetic waves scatter off small particles. It is an extension of the Rayleigh scattering theory, which applies primarily to particles whose size is much smaller than the wavelength of the incident light.
Transport length typically refers to the effective length of a medium or system that affects the movement or transport of a particular quantity, such as mass, energy, or charge. The specific meaning can vary depending on the context in which it is used. Here are a few examples of how "transport length" might be applied in different fields: 1. **Physics**: In the context of particle transport, transport length may refer to the average distance that particles can travel before undergoing a scattering event or interaction.

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