A quarter note is a musical note that typically represents one beat in a 4/4 time signature, which is one of the most common time signatures in Western music. In written music, a quarter note is represented by a filled-in oval note head and a straight stem. In terms of duration, a quarter note is equal to one-fourth of a whole note.
305 mm artillery typically refers to artillery pieces that have a bore diameter of 305 millimeters (approximately 12 inches). This caliber has been used in various types of artillery systems, including howitzers, cannons, and coastal defense guns, throughout military history. The 305 mm caliber was notably employed during the early to mid-20th century, particularly in World War I and World War II.
"Space guns" can refer to a few different concepts depending on the context in which the term is used: 1. **Theoretical Space Weapons**: This refers to concepts of weapons designed for use in space, including orbital bombardment systems, laser weapons, and railguns. These types of weapons are often discussed in military and strategic contexts, considering their potential applications in conflicts related to space.
The term "520 mm artillery" typically refers to large-caliber artillery pieces that have a bore diameter of 520 millimeters. This caliber is notably larger than standard artillery used in most conventional military applications. An example of a 520 mm artillery piece is the Soviet "K欲" (also known as "Katushka" or "K-3," which is a railway gun).
Nuclear artillery refers to large-caliber artillery pieces that are capable of firing nuclear projectiles, commonly referred to as nuclear shells. These shells contain a nuclear warhead instead of conventional explosive material. Nuclear artillery was developed during the Cold War as part of various nations' military arsenals, particularly by the United States. The concept includes various platforms, most notably the M65 Atomic Cannon, which was operational in the 1950s and 1960s.
Cutler's bar notation is a method used primarily in the field of statistics and time series analysis to represent the structure and relationships within a dataset or a statistical model visually. It's particularly useful for simplifying the interpretation of complex data sets. However, it seems that this notation is not well-documented or widely standardized, so the details may vary or be interpreted differently in various contexts.
Knuth's up-arrow notation is a way to represent very large numbers, especially those that arise in combinatorial mathematics and computer science. It was developed by Donald Knuth in 1976 as a method to describe exponential towers and hyperoperations. The basic idea revolves around using arrows to denote repeated operations. Let's break it down: 1. **Single Arrow**: The notation \( a \uparrow b \) is equivalent to \( a^b \) (i.e.
Skewes's number is a large number that arises in number theory, specifically in the context of prime numbers and the distribution of primes. It was originally derived by mathematician Stanley Skewes in the 1930s while studying the distribution of prime numbers and the zeros of the Riemann zeta function.
Laser blended vision is a vision correction technique that combines elements of both LASIK (Laser-Assisted In Situ Keratomileusis) and other refractive surgeries to address presbyopia and other age-related vision issues. It aims to provide a more natural range of vision for individuals who need correction for near and distance vision, often associated with aging. In the procedure, one eye may be corrected for distance vision, while the other is adjusted for near vision.
Vulvar intraepithelial neoplasia (VIN) is a condition characterized by abnormal changes in the cells on the surface of the vulva, which is the external part of the female genitalia. VIN is considered a precancerous condition, meaning that while the cells are abnormal, they are not yet invasive cancer.
An Optical Parametric Amplifier (OPA) is a device that amplifies light by utilizing the nonlinear optical process known as parametric amplification. OPAs are key components in the field of nonlinear optics and are widely used in applications such as laser systems, frequency conversion, and pulse compression.
Jean-Claude Simon is a French novelist known for his contributions to literature, particularly in the realm of contemporary fiction. He is recognized for his intricate narrative style and exploration of themes such as memory, identity, and the passage of time. Simon's works often blend elements of realism with philosophical inquiries, making him a significant figure in modern French literature.
John Dudley is a prominent physicist known for his work in the field of nonlinear optics, particularly in the areas of pulse dynamics and the generation of short laser pulses. He has made significant contributions to the understanding of solitons, which are waveforms that maintain their shape while traveling at constant velocity. His research often explores the interactions of light with matter, as well as the development of optical devices and technologies that utilize these phenomena.
Louise Willingale is a British astrophysicist known for her work in the field of astrophysics, particularly related to the study of gamma-ray bursts and the early universe. She has conducted significant research on the mechanisms behind these explosive phenomena and their implications for understanding cosmic events. In addition to her research, she is also involved in public engagement and education in science, aiming to inspire interest in astrophysics and related fields.
William B. Bridges was a notable figure primarily recognized for his work in the field of organizational development and change management. He is best known for his concepts related to the transition process within organizations, particularly through his influential book "Managing Transitions: Making the Most of Change." In this book, he outlines a framework for understanding how individuals and organizations experience change, emphasizing the psychological and emotional aspects of transition.
Wolfgang Kautek is an Austrian physicist and researcher known for his work in the fields of photonics, material science, and energy technologies. He has made significant contributions to the understanding of laser materials interactions and has been involved in various projects related to solar energy and nanotechnology. His research often explores innovative applications of laser technology in manufacturing and energy conversion.
Coherent addition refers to the process of combining two or more waveforms or signals that are in phase or have a constant phase relationship with each other. This principle is often applied in fields such as physics, optics, and signal processing. When waves are coherent, their peaks and troughs align, and when they are added together, their amplitudes sum constructively, leading to a stronger resultant wave.
High Harmonic Generation (HHG) is a nonlinear optical process in which high-frequency photons are produced by the interaction of intense laser light with atoms, molecules, or solid surfaces. This phenomenon occurs when a strong laser field ionizes an atom, freeing electrons. These freed electrons can then be accelerated by the laser field and, upon recombining with their parent ions, emit photons at integer multiples (harmonics) of the original laser frequency.
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!
Intro to OurBigBook
. Source. We have two killer features:
- 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-calculusArticles 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/derivativeVideo 2. OurBigBook Web topics demo. Source. - 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.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
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. - Infinitely deep tables of contents:
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





