A telephone number is a set of digits assigned to a specific telephone line or mobile device, allowing it to be dialed in order to establish a voice communication connection. Typically, a telephone number consists of several components, including: 1. **Country Code**: A numeric code that identifies the country, often beginning with a "+", e.g., +1 for the United States. 2. **Area Code**: A numeric code that identifies a specific geographic area within a country.
ORACLE was a teletext service in the UK that was launched in the early 1980s and operated until the early 2000s. It provided information such as news, entertainment, sports, weather, and TV listings through a broadcast transmission, allowing viewers to access text-based information on their television screens. Teletext services like ORACLE worked by transmitting pages of text and graphics over the television signal, which could be accessed using a compatible television set or decoder.
"Jack-Jack Attack" is a short animated film produced by Pixar Animation Studios and released as a bonus feature on the DVD and Blu-ray of "The Incredibles." It was directed by Brad Bird and released in 2005. The short film is set in the same universe as "The Incredibles" and follows the character Jack-Jack Parr, the youngest member of the superhero family, as he is left in the care of a babysitter named Kari McKeen.
Haze refers to a type of atmospheric phenomenon characterized by the presence of suspended particles in the air that reduce visibility. These particles can include dust, smoke, water droplets, and other pollutants. Haze can be caused by natural events, such as wildfires or volcanic eruptions, as well as human activities, such as industrial emissions, vehicle exhaust, and agricultural burning. The presence of haze can lead to reduced air quality and pose health risks, particularly for individuals with respiratory conditions.
"The Chronicle of the Fallers" is a fantasy novel by the author of the acclaimed series "The Broken Earth," N.K. Jemisin. Published as part of an anthology, this work explores themes of identity, cultural conflict, and resilience through its richly woven narrative and character development. The story is set in a world where societal structures are challenged by magical phenomena and explores the lives of its characters as they navigate the complexities of their existence.
Antiope refers to a teletext system that was used primarily in Europe during the 1990s. It was designed to provide text-based information services alongside television broadcasts, allowing viewers to access news, weather updates, sports scores, and other information directly on their television screens. The system typically utilized a form of broadcasting that sent data encoded within the television signal, which viewers could access using a teletext-enabled television or set-top box.
Edmund Cartwright (1743–1823) was an English clergyman and inventor, best known for his invention of the power loom, which revolutionized the textile industry during the Industrial Revolution. Cartwright's loom, patented in 1785, mechanized the process of weaving cloth, significantly increasing production efficiency and reducing the amount of manual labor required.
The "Hacker Manifesto" is a text written by the hacker and activist known as "Phiber Optik" (real name: Loyd Blankenship) in 1986. It is a reflective piece that articulates the thoughts and philosophies of hackers at that time, emphasizing the hacker ethic and the culture surrounding hacking.
Graphite by Ciro Santilli 40 Updated 2025-07-16
The layered one.
Lit: fish timber question answer.
The dialog is also known as allegory for an incredibly deep philosophical discussion between an idealized wise woodcutter and a fisherman, e.g. mentioned at: www2.kenyon.edu/Depts/Religion/Fac/Adler/Writings/Fisherman%20and%20Woodcutter.pdf
This song is just too slow for Ciro Santilli to make much out of it.
Figure 1.
Dialog between Fisherman and Woodcutter Chinese traditional painting by Xie Shichen
.
Video 2.
Dialog between Fisherman and Woodcutter performed by Wu Jinglüe
. Source. Accompagnied by di flute to reinforce the idea of two voices. This one has TODO year.
The Edison Portland Cement Company was an American cement manufacturing company founded by inventor Thomas Edison in the early 20th century. Established in 1899 in New Jersey, the company specialized in the production of Portland cement, which is a key ingredient in concrete and construction. Edison was interested in developing efficient methods of cement production and sought to innovate the process.
Electrocuting an elephant refers to a historical event in which an elephant was executed using electricity as a method of capital punishment. One of the most infamous cases occurred in 1903, when an elephant named Topsy was killed at Coney Island in New York. Topsy was known for her aggressive behavior, which was attributed to her mistreatment by handlers.
A phonometer is an instrument used to measure sound levels, particularly sound intensity or pressure. It is typically used in acoustics and audio engineering to assess environmental noise, monitor sound levels in various settings, and help in the design of acoustical spaces. Phonometers can provide measurements in decibels (dB), which is a logarithmic unit used to express the intensity of sound.
"The Great Train Robbery" is a silent short film directed by Edwin S. Porter and released in 1903. It is often regarded as one of the first narrative films and is notable for its pioneering techniques in filmmaking, including the use of parallel editing and outdoor locations. The film is approximately 12 minutes long and depicts a fictionalized account of a group of bandits who rob a train.
As of my last update in October 2023, Gennadi Tumat does not appear to be a widely recognized public figure, concept, or term in general knowledge.
Tidal circularization refers to the process by which the orbits of celestial bodies, such as stars and planets, become more circular over time due to tidal interactions. This phenomenon is particularly important in binary star systems and planetary systems, where gravitational forces influence the shape and stability of the orbits. When two objects are in close proximity, their gravitational pull creates tidal forces that can distort their shapes.
Bowling in cricket refers to the action of delivering the ball to the batsman with the intention of getting them out or preventing them from scoring runs. It is one of the key roles in the game, alongside batting and fielding. Bowlers use a variety of techniques and strategies to achieve their objectives, and their effectiveness can greatly influence the outcome of a match.
Time series software is a type of analytical tool specifically designed for analyzing, modeling, and forecasting time-dependent data. Time series data is a sequence of data points collected or recorded at successive points in time, typically at uniform intervals. Examples include stock prices, weather data, economic indicators, and sensor data. Key features and functionalities of time series software often include: 1. **Data Visualization**: Tools for plotting time series data to identify trends, seasonal patterns, and anomalies.
Time series statistical tests are methodologies used to analyze data that is collected over time to identify patterns, trends, and relationships within that data. Time series data is particularly important in fields such as economics, finance, environmental science, and many others where observations are made at consecutive time intervals.

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