A low-velocity zone (LVZ) is a specific region within the Earth's interior, typically found in the upper mantle, characterized by a significant reduction in seismic wave velocities compared to surrounding areas. These zones are often associated with certain geological and tectonic features, such as subduction zones, hotspots, and the presence of partially melted rock.
The Mohorovičić discontinuity, often referred to as the "Moho," is a significant geological boundary that marks the transition between the Earth's crust and the underlying mantle. It is named after the Croatian seismologist Andrija Mohorovičić, who discovered this boundary in 1909. The Moho is typically characterized by a sudden increase in the speed of seismic waves, indicating a change in composition and physical state.
"Sial" can refer to different things depending on the context. Here are a few possible meanings: 1. **Geological Term**: In geology, "sial" refers to the layer of the Earth's crust that is primarily composed of silicon and aluminum. It is typically associated with the continental crust and is lighter than the denser "sima," which is composed of silicon and magnesium and found in the oceanic crust.
Amigurumi is a Japanese term that refers to the art of knitting or crocheting small, stuffed yarn creatures. The word comes from combining "ami," which means knitted or crocheted, and "nuigurumi," which means stuffed toy. Amigurumi creations can range from animals to people and various objects, often characterized by their cute and whimsical designs. Typically made using crochet techniques, amigurumi is usually worked in the round and involves making individual pieces that are sewn together.
Bunnies By The Bay is a company that specializes in creating high-quality plush toys, children's apparel, and gifts, often featuring whimsical bunny characters. Founded in 1989, the brand aims to provide comfort and joy through their soft, cuddly products designed for infants and young children. Their offerings often include a variety of stuffed animals, nursery decor, and accessories, all characterized by a charming, vintage-inspired aesthetic.
"Gonk" can refer to a few different things depending on the context: 1. **Star Wars Character**: In the Star Wars universe, Gonk refers to a type of droid known as the GNK power droid. They are often depicted as boxy, with a simple design and a distinct waddling movement. They are primarily used as power sources for other equipment and vehicles in the Star Wars saga.
Puffkins is a brand of plush toys that were popular in the 1990s. The toys are characterized by their soft, squishy bodies and distinctive design, often resembling cute animals or fantasy creatures. Each Puffkin typically features large, expressive eyes, colorful fabric, and a unique personality. Puffkins were produced by the toy company Applause, which was known for creating a variety of collectible plush items.
A teddy bear is a soft, stuffed toy in the shape of a bear, commonly used as a children's toy or comfort object. Typically made from plush fabric and filled with materials like polyester fiber or cotton, teddy bears come in various sizes, colors, and designs. They often have button or embroidered eyes and a stitched nose and mouth. The teddy bear has become an iconic symbol of childhood and comfort, often associated with warmth, love, and friendship.
Greg Mankiw is an American economist and professor known for his work in macroeconomics, public policy, and economic education. He is a professor at Harvard University and has served as the Chairman of the Council of Economic Advisers under President George W. Bush. Mankiw is also well-known for his widely used textbook "Principles of Economics," which has been influential in teaching economics to students around the world.
Yoshikitty is a character created as a collaboration between Yoshiki, the renowned Japanese musician, composer, and co-founder of the influential rock band X Japan, and Sanrio, the company behind Hello Kitty and other popular characters. Yoshikitty is essentially a fusion of Yoshiki and Hello Kitty, combining elements of both in a cute, whimsical design.
In group theory, a **conjugate-permutable subgroup** is a specific type of subgroup that has a particular property related to conjugation. A subgroup \( H \) of a group \( G \) is said to be conjugate-permutable if for every element \( g \in G \), the following condition holds: \[ H^g = gHg^{-1} \text{ satisfies } H^g \cap H \neq \emptyset.
Fitting length, often used in contexts like pharmaceuticals, manufacturing, or engineering, refers to the length or dimension that is required for parts or components to fit together properly. In these contexts, achieving the correct fitting length is crucial for ensuring that components function as intended without issues such as misalignment, gaps, or mechanical failure.
Mohamed El-Amin Ahmed El-Tom is not a widely recognized public figure as of my last knowledge update in October 2023, and there may be limited information available about him. It's possible that he is a private individual or a figure whose prominence has emerged recently, or he might be known in a specific local context or niche.
The Philadelphia Inquirer Sudoku National Championship is an annual event that brings together Sudoku enthusiasts from across the United States to compete in solving Sudoku puzzles. Organized by The Philadelphia Inquirer, the championship typically features a series of rounds with various levels of difficulty, where participants are tasked with completing puzzles within a time limit. The event aims to celebrate the popularity of Sudoku, promote logical thinking, and provide a platform for players to showcase their skills.
Wayne C. Booth (1921–2005) was an influential American literary critic, theorist, and professor, known primarily for his work in the field of narrative theory and rhetoric. He is best known for his book "The Rhetoric of Fiction," published in 1961, where he examined the relationship between authors, narrators, and readers, and defined concepts such as "unreliable narration.
Rhetoric journals are academic publications that focus on the study and analysis of rhetoric, which is the art of effective communication and persuasion. These journals typically explore various aspects of rhetoric, including its historical development, theoretical frameworks, and practical applications across different fields, such as communication, literature, education, politics, and more. The content of rhetoric journals may include original research articles, essays, case studies, reviews of literature, and discussions of rhetorical strategies and techniques.
Figures of speech are rhetorical devices or literary techniques that authors, poets, and speakers use to convey meaning, create emphasis, or enhance their expression. They often involve a departure from the literal use of language to convey more vivid, imaginative, or nuanced meanings. Figures of speech can add depth, color, and emotional resonance to language. There are many types of figures of speech, including: 1. **Simile**: A comparison between two unlike things using "like" or "as.
Aureation refers to the process of creating a golden or gilded appearance, often used in various contexts such as art, decoration, and literature. In art, it typically involves applying a layer of gold leaf or paint to an object to enhance its visual appeal and convey a sense of luxury or divinity. In literature, aureation can describe a style of writing that incorporates ornate language, elevated diction, or poetic forms that evoke richness and beauty.
Evasion in ethics generally refers to the act of avoiding or shirking an ethical obligation or responsibility. This can occur in various contexts, including personal, professional, and societal dimensions. Evasion can manifest in different forms, such as: 1. **Moral Evasion**: This involves individuals avoiding their moral duties or commitments by rationalizing their actions or by employing excuses that diminish their sense of responsibility.
The "grand style" in rhetoric refers to a mode of writing or speaking that is characterized by elevated language, elaborate constructions, and a formal tone. It is often used to convey important themes or to elicit strong emotional responses from the audience. This style aims to inspire, persuade, or evoke admiration, typically employing rhetorical devices such as metaphor, allusion, parallelism, and various forms of amplification. The grand style is contrasted with simpler, more direct styles of communication.

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