Electron Resonance Imaging (ERI) is a specialized imaging technique that is an extension of traditional electron resonance spectroscopy methods, such as Electron Paramagnetic Resonance (EPR) or Electron Spin Resonance (ESR). While EPR/ESR focuses on the detection and analysis of unpaired electrons in a sample—usually used in chemistry and biochemistry to study free radicals and paramagnetic speciesElectron Resonance Imaging aims to provide spatial information, effectively creating images from the data collected.
The Hirtz compass, also known as a Hirtz navigational compass, is a type of compass that was historically used in navigation, particularly in maritime settings. It features a card that is divided into 32 points, which correspond to the points of the compass, allowing for more precise directional readings than a standard 16-point compass. The Hirtz compass is notable for its use in various kinds of navigational applications, often chosen for its accuracy and reliability.
Incidental imaging findings refer to abnormalities or variations that are discovered unintentionally during medical imaging studies, such as X-rays, CT scans, MRIs, or ultrasounds, which are primarily performed to evaluate a specific clinical concern or symptom. These findings are often unrelated to the patient's current medical issue and may not require further investigation or treatment. For example, a CT scan that was ordered to investigate abdominal pain might reveal a small kidney stone or a lung nodule that the patient wasn't aware of.
The Lubberts effect refers to a phenomenon observed in animal communication, specifically related to the way certain species interpret signals based on the context in which they are received. While the term itself may not be widely recognized in all fields, it can be understood as a part of behavioral ecology or communication studies in animals.
Paleoradiology is a specialized field that combines principles of paleontology and radiology to study ancient biological specimens, particularly fossils. It utilizes advanced imaging techniques such as X-rays, computed tomography (CT), and magnetic resonance imaging (MRI) to non-destructively examine the internal structures of fossils. This method allows researchers to gain insights into the morphology, development, and pathologies of extinct organisms without damaging the specimens.
Could you please clarify which "Waters" you are referring to? There are many notable individuals with that last name, such as Roger Waters of Pink Floyd, or other prominent figures in various fields. Each might have different views on a range of topics.
Deterministic noise refers to a type of noise or variability in a system that is predictable and can be described by a deterministic function. Unlike stochastic noise, which is inherently random and cannot be precisely predicted, deterministic noise follows a specific pattern or set of rules. Deterministic noise can arise from various sources, including: 1. **Systematic Errors**: In measurements, these could be consistent biases that affect the accuracy of data.
Geochronology is the scientific discipline that involves studying the age of Earth materials and the timing of geological events. It utilizes various techniques to date rocks, fossils, sediment, and even meteorites to establish a timeline of Earth's history and the evolution of its geological features and life forms. Geochronology employs several methods, including: 1. **Radiometric Dating**: This technique measures the decay of radioactive isotopes within minerals and rocks.
K–Ar dating, or potassium-argon dating, is a radiometric dating technique used to determine the age of rocks and minerals based on the radioactive decay of potassium-40 (K-40) to argon-40 (Ar-40). Potassium-40 is a naturally occurring isotope of potassium that decays over time into argon, which is a gas.
Thermochronology is a geochronological technique used to date the thermal history of rocks and minerals. It involves the study of the temperature history of geological materials over time, providing insights into processes such as cooling, uplift, erosion, and tectonic activity. The primary focus of thermochronology is on isotopic systems that are sensitive to temperature, allowing researchers to determine when a sample cooled below a specific closure temperature—an important stage in its thermal history.
The Doppler parameter, often denoted as \( \beta \), is a dimensionless quantity used to describe the relativistic effects of motion in the context of Doppler shift, particularly in astrophysics and cosmology. It is defined as: \[ \beta = \frac{v}{c} \] where: - \( v \) is the relative velocity of an object moving away from or towards an observer, - \( c \) is the speed of light in a vacuum.
The Historical Model Railway Society (HMRS) is an organization based in the United Kingdom that focuses on the promotion and preservation of the history and heritage of railways, particularly through the medium of model railways. Founded in 1960, the HMRS aims to provide resources, support, and a community for railway enthusiasts, historians, and modelers.
Eisenbahn Kurier is a German magazine that focuses on railways and trains. It covers a wide range of topics related to rail transport, including news, technical details, historical perspectives, and contemporary issues in the railway industry. The magazine is popular among railway enthusiasts, historians, and professionals in the field, providing insights into both German rail systems and international railway developments. It includes features on model trains, rail operations, and reviews of railway technology and equipment.
Indeterminism is a philosophical concept asserting that not all events in the universe are determined by prior causes or conditions. In other words, it is the idea that some events can occur without being predetermined by preceding factors, allowing for randomness or chance to play a role in the unfolding of events. In the context of philosophy and metaphysics, indeterminism challenges determinism, which holds that every event or state of affairs is the result of preceding events in accordance with the laws of nature.
Model Railroader is a popular magazine focused on the hobby of model railroading. It has been published since 1934 and serves as a resource for hobbyists of all levels, from beginners to experienced model railroaders. The magazine features articles about various aspects of the hobby, including modeling techniques, product reviews, layout design, and operations. It also showcases real-world railroads, offers tips for building and painting models, and discusses the latest trends and products in the industry.
Railroad Model Craftsman is a magazine and publication dedicated to the hobby of model railroading. It serves as a resource for hobbyists, offering articles, tips, and instructional content on various aspects of model railroading, including layout construction, scenery creation, and model building. The magazine often features detailed project ideas, product reviews, and profiles of impressive model railroads and their builders.
A Hardware Random Number Generator (HRNG), also known as a True Random Number Generator (TRNG), is a device or circuit that generates random numbers based on physical processes rather than algorithmic computations. This type of generator captures inherent physical phenomena, such as thermal noise, electronic noise, radioactive decay, or other quantum effects, to produce randomness. ### Key Features of HRNGs: 1. **Source of Entropy**: HRNGs rely on natural stochastic processes that are unpredictable.
RDRAND is an instruction available in Intel and AMD processors that provides a hardware-based random number generator (RNG). It was introduced by Intel in its fourth-generation Core processors (also known as "Haswell") and is part of the x86 instruction set architecture. RDRAND generates random numbers using a digital circuit that is designed to produce high-quality randomness based on physical phenomena.
Fatou's Lemma is a result in measure theory, particularly in the context of Lebesgue integration. It provides a relationship between limits of integrals and the integral of limits of measurable functions. Specifically, it deals with the behavior of non-negative measurable functions.
The term "Flat function" can refer to different concepts depending on the context in which it is used. Here are a few interpretations: 1. **Mathematics**: In mathematical terms, a flat function might refer to a constant function, which has the same value across its entire domain. In this case, the graph of the function would appear flat (horizontal) on a coordinate plane. 2. **Programming (e.g.

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