Petosiris and Nechepso are figures from ancient Egyptian history, specifically related to the development of astrology and astronomy in the Hellenistic period. Petosiris was an Egyptian priest and astrologer, most noted for his works in the field of astrology during the 2nd century BCE. His writings reflect the integration of Egyptian religious practices with Greek philosophical thought, especially in the context of astrology.
Madeira is an archipelago located in the North Atlantic Ocean, southwest of Portugal. It is an autonomous region of Portugal and consists of several islands, the largest of which is Madeira Island itself, along with Porto Santo, Desertas Islands, and Selvagens Islands. Madeira is known for its stunning natural landscapes, including rugged mountains, lush forests, and a mild climate, which makes it a popular destination for tourists.
NUTS stands for "Nomenclature of Territorial Units for Statistics," which is a hierarchical system for dividing up the economic territory of the European Union and European Economic Area. In the context of the United Kingdom, the NUTS classification consists of multiple levels, with NUTS 1 being the highest level of regional classification. As of the most recent classifications, the NUTS 1 regions of the United Kingdom are: 1. **East Scotland** 2.
Transdanubia is a historical and geographical region located west of the Danube River in Hungary. It is known for its diverse landscapes, which include rolling hills, vineyards, and the picturesque Lake Balaton, the largest freshwater lake in Central Europe. The region features a mix of rural and urban areas, with cities like Székesfehérvár, Veszprém, and Pécs being notable centers.
NUTS, or the Nomenclature of Territorial Units for Statistics, is a hierarchical system for dividing up the economic territory of the European Union and the European Economic Area. The NUTS classification is used for collecting, developing, and analyzing the regional statistics of the EU.
Catalonia is an autonomous community in northeastern Spain, characterized by its distinct culture, history, and language, Catalan. It has its own parliament and government, which have varying degrees of legislative power. The capital of Catalonia is Barcelona, a major cultural and economic center known for its architecture, art, and vibrant lifestyle. Historically, Catalonia has a unique identity that dates back centuries, with its own language, customs, and traditions.
Melilla is a Spanish autonomous city located on the northern coast of Africa, bordering Morocco. It is one of two cities—along with Ceuta—that form part of Spain but are situated on the African continent. Melilla has a strategic location near the Mediterranean Sea and is separated from the Spanish mainland by the Mediterranean waters. The city has a rich history influenced by various cultures, including Berber, Spanish, and other Mediterranean civilizations.
The "Otto Hahn" is a German research vessel named after the renowned physicist Otto Hahn, who was instrumental in the discovery of nuclear fission. The ship is part of the German research fleet and is primarily used for marine research and oceanographic studies. Launched in the mid-20th century, the Otto Hahn is equipped with laboratories and cutting-edge technology to carry out a variety of scientific missions. This includes studying the marine environment, conducting biological and chemical analyses, and exploring underwater geology.
Cosmic dust, also known as interstellar dust or space dust, refers to tiny particles of solid material found in space. These particles are typically made up of various elements and compounds, such as silicates, carbon-based materials, metals, and ice.
Photographs of Earth from outer space refer to images captured from spacecraft, satellites, or space missions that show our planet from various distances and perspectives. These photographs can reveal the Earth's surface, atmosphere, and weather patterns, as well as human impact on the planet. They serve multiple purposes, including scientific research, environmental monitoring, communication, and aesthetic appreciation.
A smoothed octagon is a geometric shape that is derived from a regular octagon by rounding its corners. In terms of its definition and properties, it combines aspects of both polygonal and curved shapes. Here's how a smoothed octagon is typically characterized: 1. **Base Shape**: Start with a regular octagon, which has eight equal-length sides and eight equal angles (each measuring 135 degrees).
Pakistani cryptographers, like those from other countries, are individuals who specialize in the study and practice of cryptography, which is the art and science of securing communication by transforming information into a secure format. This field involves creating algorithms, encryption methods, and security protocols to protect data from unauthorized access and breaches. In Pakistan, cryptography plays a vital role in various sectors, including government communications, financial institutions, and cybersecurity.
Abdul Qadeer Khan, often referred to as A.Q. Khan, was a prominent Pakistani nuclear scientist and metallurgical engineer who is best known for his role in Pakistan's nuclear weapons program. Born on April 1, 1936, in Bhopal, India, he later migrated to Pakistan after the partition in 1947.
The number 7825 can refer to different things depending on the context. It is simply a four-digit integer, which could represent a quantity, a code, a part number, or even a zip code in the United States (although it does not correspond to any known zip code).
Anime and manga exploring the concept of parallel universes often delve into themes of alternate realities, alternate versions of characters, and the consequences of choices made in different dimensions. Here are some notable series that incorporate parallel universes: 1. **Steins;Gate**: This science fiction anime revolves around time travel and the concept of multiple timelines. The story follows a group of friends who discover a way to send messages to the past, leading to various branching timelines and alternate realities.
Video games exploring themes of parallel universes often delve into alternate realities, multiple dimensions, and the implications of choices made by characters. Here are a few notable games that incorporate the concept of parallel universes: 1. **Bioshock Infinite**: This first-person shooter involves themes of alternate realities and the multiverse. Players explore a floating city and encounter different versions of characters based on choices made throughout the game.
"Married" is a radio series that aired on BBC Radio 4. It is a comedy-drama created by the British comedian and writer, Justin Edwards, and it originally premiered in 2013. The show is centered around the life of a couple, exploring the ups and downs of their marriage and the challenges they face in their relationship. The series received positive reviews for its humorous yet realistic portrayal of marriage, featuring relatable situations and characters.
"The Rising of the Shield Hero" is a Japanese light novel series written by Aneko Yusagi. It follows the story of Naofumi Iwatani, an otaku who is suddenly transported to a fantasy world along with three other young men. Each of them is summoned as a "Hero" to defend the world from waves of monsters, but Naofumi is assigned the role of the Shield Hero, which is considered less prestigious compared to the other heroes wielding more offensive weapons.
CERN, the European Organization for Nuclear Research, conducts a variety of experiments primarily focused on particle physics. The most notable of these experiments involve the Large Hadron Collider (LHC), which is the world's largest and most powerful particle accelerator. Here are some key aspects of CERN's experiments: 1. **Particle Acceleration**: CERN accelerates protons and heavy ions to near the speed of light using the LHC. These particles are then collided to study fundamental interactions and properties of matter.

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