Disappointment is an emotional response that occurs when expectations, hopes, or desires are not met. It can arise from various situations, such as unmet personal goals, the failure of events or people to meet one’s expectations, or when outcomes differ from what was anticipated. The experience of disappointment can range from mild feelings of sadness to more intense emotional distress, depending on the significance of the unmet expectation.
Imminent peril refers to a situation that poses an immediate and serious risk or threat to a person, property, or environment. This term is often used in legal contexts, particularly in relation to self-defense or the use of force, indicating that a threat is not only serious but also urgent and requires immediate action to prevent harm. In essence, it signifies a critical condition that demands a prompt response to avert potential damage or injury.
The term "risk quotient" generally refers to a numerical expression that quantifies the level of risk associated with a particular exposure or activity in relation to a reference point. It often expresses the ratio of exposure to a benchmark that is considered safe or acceptable.
The Second Principal Meridian is one of the principal meridians used in the Public Land Survey System (PLSS) in the United States. Principal meridians are the key reference lines used in the surveying and division of land. Each meridian serves as a baseline for establishing townships and ranges, which help in the systematic parceling of land primarily in the western United States. The Second Principal Meridian, established in 1815, runs through a specific location in the U.S.
Sebastian Elbaum is a computer scientist known for his contributions in areas such as software engineering, software testing, and program analysis. He has published research on topics like automated program repair, software quality, and the integration of testing and debugging tools.
Sébastien Candel is a notable French physicist known for his work in the field of laser physics and optics. He has made significant contributions to the study of light-matter interactions, laser technologies, and related applications. Candel has been involved in various research projects and has published numerous scientific papers throughout his career.
Puncture resistance refers to the ability of a material or product to withstand puncturing forces without being penetrated or damaged. This property is particularly important in various applications, including: 1. **Footwear**: Safety shoes often feature puncture-resistant soles to protect the wearer's feet from sharp objects such as nails or shards of glass. 2. **Gloves**: Puncture-resistant gloves are used in industries where workers handle sharp tools or materials, providing protection against cuts and punctures.
Thermal history coating, also known as thermal history indicator or thermal monitoring coating, refers to a type of thermochromic coating that changes color in response to temperature variations over time. This technology is often used to indicate heat exposure for materials, components, or products in various industries, including aerospace, automotive, and electronics.
Mechanics is a branch of physics that deals with the study of motion, forces, and the behavior of physical objects. It provides a framework for understanding how and why objects move or remain at rest, and it encompasses a variety of concepts and theories. The field of mechanics can be broadly divided into two main categories: 1. **Classical Mechanics**: This area focuses on the motion of macroscopic objects (from projectiles to planets) and is governed by classical physics principles.
Circle grid analysis is a spatial analysis technique often used in geographic information systems (GIS) to evaluate and visualize spatial patterns and relationships within a defined area. It involves overlaying a grid of circular shapes (often referred to as "circles" or "buffer zones") over a study area to analyze the distribution of certain features or phenomena. ### Key Components of Circle Grid Analysis: 1. **Grid Creation**: A grid of circles is generated over the area of interest.
Critical speed refers to a specific velocity at which a rotating object experiences a significant change in its behavior, often leading to instability or resonance. This concept is commonly applied in various fields, including mechanical engineering, structural engineering, and the dynamics of rotating machinery. 1. **Rotational Dynamics**: For rotating shafts or structures, critical speed is the speed at which the natural frequency of the system aligns with the rotating frequency.
A meteorite is a solid fragment of a meteoroid that survives its passage through the Earth's atmosphere and lands on the Earth's surface. Meteoroids are small rocky or metallic bodies in outer space, and when they enter the atmosphere, they heat up due to friction, creating a visible streak of light called a meteoroid or shooting star. If a meteoroid is large enough to withstand this intense heat and reach the ground, it is classified as a meteorite.
Half-life is a term used in various scientific fields, most commonly in physics and chemistry, to describe the time it takes for half of a substance to decay or be eliminated. Here are some contexts in which half-life is used: 1. **Radioactive Decay**: In the context of radioactive materials, half-life is the time required for half of the radioactive atoms in a sample to decay into a different element or isotope.
Metal aromaticity is a concept that extends the traditional idea of aromaticity, which is primarily associated with organic compounds featuring cyclic conjugated systems that follow Hückel's rule (4n + 2 π electrons). In metal aromatic systems, the aromatic character is attributed to metal-containing or metal-coordinated compounds that exhibit a similar stabilization due to delocalized electrons.
In coastal geography, a "gut" refers to a narrow body of water or a strait that connects two larger bodies of water. It often serves as a channel for water flow and can play an important role in marine navigation, ecology, and coastal dynamics. Guts may be influenced by tides, currents, and sediment transport, and they can host various ecosystems, including wetlands and estuaries. The term is commonly used in specific coastal regions, particularly in the context of maritime or fishing communities.
Pythia's Oasis is likely a reference to a particular conceptual or fictional location, possibly inspired by the ancient Greek site of Delphi where the Oracle of Delphi, often associated with Pythia, was located. The term "oasis" suggests a place of refuge or tranquility, possibly in a metaphorical sense.
A submergent coastline is a type of coastline that forms when sea levels rise or land levels sink, leading to the inundation of previously exposed land. This process can happen due to various factors, including rising sea levels caused by climate change, tectonic activity, or land subsidence. As a result, features of a submergent coastline often include drowned river valleys, estuaries, and fjords.
Biotone is a brand known for its range of professional massage oils, lotions, and creams used primarily in massage therapy and bodywork. Their products are designed to provide glide and nourishment for the skin during massage, while also being formulated to offer various benefits, such as hydration, relaxation, and muscle relief. Biotone products often include natural ingredients and essential oils, appealing to both therapists and clients in spa and therapeutic settings.
Geodispersal refers to the process through which organisms spread or disperse across geographical regions, leading to an increase in their distribution and range. This term is often used in the context of ecology and biogeography to describe how species expand their habitats or populations over time, particularly in relation to physical barriers like mountains, rivers, or oceans.
Patch dynamics is a concept used in ecology and environmental science to describe the spatial and temporal patterns of ecosystems characterized by discrete patches or areas that differ in their composition, structure, and function. These patches can be formed by various factors, including natural disturbances (like fire, floods, or storms), human activities (such as urban development or agriculture), and inherent ecological processes.

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