Coats of arms featuring lightning typically symbolize power, swiftness, or divine intervention. The specific imagery and meaning can vary greatly based on the context and the heraldic tradition of the region in question. In heraldry, lightning might appear as a single bolt or multiple bolts, and is often depicted in yellow or gold against a darker background.
Injuries from lightning strikes can be severe and life-threatening, affecting individuals who are directly struck by lightning or who experience secondary effects from a nearby strike. The effects of a lightning strike can vary widely, and there are several potential injuries and complications associated with them: 1. **Cardiac Arrest**: Lightning can disrupt the heart's electrical system, leading to cardiac arrest. Victims may require immediate resuscitation efforts.
The 1994 Dronka floods refer to a catastrophic flooding event that occurred in the town of Dronka, located in Egypt, in November 1994. The floods were primarily caused by heavy rainfall that led to the overflow of the nearby Nile River. The inundation resulted in significant damage to infrastructure and homes, with thousands of people being affected by the disaster. During this event, there was also a notable lightning strike that occurred amidst the severe weather conditions.
Astraphobia by Wikipedia Bot 0
Astraphobia is the intense fear of thunder and lightning. It is classified as a specific phobia and can cause significant anxiety and distress in those who experience it. People with astraphobia may go to great lengths to avoid situations where they might encounter storms, and their fear can trigger symptoms such as sweating, rapid heartbeat, trembling, or even panic attacks.
The Austrian Lightning Detection and Information System (ALDIS) is a network designed to detect and provide information about lightning activity across Austria. The system utilizes a network of sensors and advanced technology to monitor lightning strikes, enabling accurate real-time detection, data collection, and analysis. Key features and functions of ALDIS include: 1. **Real-Time Monitoring**: ALDIS continuously monitors lightning activity, allowing for real-time tracking of storms and lightning strikes across the country.
Bidental by Wikipedia Bot 0
"Bidental" refers to a specific type of dental device, often used in orthodontics or prosthodontics. It may involve a dental appliance that is designed to assist in aligning teeth, correcting dental bites, or supporting dental restorations. However, it is possible that "bidental" could also refer to a concept, product, or brand that may have emerged after my last knowledge update in October 2023, or it could be specific terminology used in a certain context.
An anyonic Lie algebra is a mathematical structure that arises in the study of anyons, which are quasiparticles that exist in two-dimensional systems. Anyons are characterized by their statistics, which can be neither fermionic (obeying the Pauli exclusion principle) nor bosonic (which obey Bose-Einstein statistics). Instead, anyons can acquire a phase that is neither 0 nor π when two of them are exchanged, making their statistical behavior more complex and rich.
Asymmetric norm by Wikipedia Bot 0
An **asymmetric norm** is a type of mathematical function used in functional analysis and related fields to measure the size or length of vectors in a way that does not treat the positive and negative directions equally. This contrasts with traditional norms (like the p-norm), which are symmetric and obey the property that the norm of a vector and its negation are equal.
Dry thunderstorm by Wikipedia Bot 0
A dry thunderstorm is a type of thunderstorm that produces lightning and thunder but very little or no precipitation reaching the ground. This phenomenon often occurs in environments where the lower atmosphere is dry, allowing the rain to evaporate before it can hit the ground. Dry thunderstorms can be particularly hazardous because the lightning strikes can ignite wildfires, and the lack of moisture means there is little to no rain to mitigate the fire risk.
Fulgurite by Wikipedia Bot 0
Fulgurite is a natural glass formed when lightning strikes sand or silica-rich soils. The intense heat from the lightning, which can exceed 1,800 degrees Celsius (3,273 degrees Fahrenheit), causes the sand to melt and fuse together, creating hollow, tube-like structures. Fulgurites can vary in size, color, and shape depending on the composition of the sand and the conditions of the strike.
Harvesting lightning energy refers to the concept of capturing and utilizing the immense electrical power generated by lightning strikes. Lightning is a natural phenomenon that discharges electricity in a brief but powerful burst, with the energy in a single strike estimated to be enough to power a small town for a day. The idea of harvesting this energy raises significant technical challenges and safety concerns due to the unpredictable nature of lightning and the risks associated with high-voltage phenomena.
Keraunography by Wikipedia Bot 0
Keraunography is the scientific study of lightning. The term comes from the Greek words "keras," meaning "thunder," and "grapho," meaning "to write" or "to describe." This field encompasses various aspects of lightning, including its formation, behavior, effects, and interactions with the environment. Researchers in keraunography may study phenomena such as lightning strikes, thunder, electrical properties of storms, and the impact of lightning on ecosystems and human structures.
Thunderbolt by Wikipedia Bot 0
Thunderbolt is a high-speed hardware interface developed by Intel, in collaboration with Apple, that allows for the connection of external peripherals to computers. It combines data, video, audio, and power in a single connection and is designed to provide fast data transfer rates and support a variety of devices such as monitors, storage devices, and docks.
Utpatti pidugu by Wikipedia Bot 0
"Utpatti pidugu" is a term that comes from the Telugu language, where "utpatti" refers to "origin" or "creation," and "pidugu" is often used to describe "churning" or "mixing." In a broader context, it can reference the concepts of creation, emergence, or the process of bringing forth something new from what already exists.
Denemo by Wikipedia Bot 0
Denemo is a free and open-source music engraving software that is designed to allow users to create and edit musical scores efficiently. It provides a graphical user interface that makes it easier to input and manipulate musical notation, while also allowing for the output of high-quality sheet music through the LilyPond engraving system. Denemo is particularly popular among musicians, composers, and music educators for its ease of use and the ability to quickly notate music using either mouse or keyboard shortcuts.
In category theory, which is a branch of mathematics that deals with abstract structures and relationships between them, initial and terminal objects are important concepts that describe certain types of objects within a category.
In category theory, a **limit** is a fundamental concept that generalizes certain notions from other areas of mathematics, such as the limit of a sequence in analysis or the product of sets. A limit captures the idea of a universal object that represents a certain type of construction associated with a diagram of objects within a category.
Unitary operators by Wikipedia Bot 0
Unitary operators are fundamental objects in the field of quantum mechanics and linear algebra. They are linear operators that preserve the inner product in a complex vector space. Here’s a more detailed explanation: ### Definition: A linear operator \( U \) is called unitary if it satisfies the following conditions: 1. **Preservation of Norms**: For any vector \( \psi \) in the space, \( \| U\psi \| = \|\psi\| \).
Kv1.1 by Wikipedia Bot 0
Kv1.1 refers to a specific type of voltage-gated potassium channel that is encoded by the KCNA1 gene in humans. These channels play a crucial role in regulating membrane potentials and excitability in neurons and other cell types by allowing potassium ions to flow out of the cell in response to changes in membrane voltage. The Kv1.

Pinned article: ourbigbook/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 5. . 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.
  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