In geometry, "motion" refers to the transformation of a geometric figure in space. This can involve changing the position, orientation, or size of the figure while maintaining its intrinsic properties. The main types of geometric motions include: 1. **Translation**: This involves sliding a shape from one position to another without rotating it or changing its size. Every point in the shape moves the same distance in the same direction.
A Nearly Kähler manifold is a specific type of almost Kähler manifold, which is a manifold equipped with a Riemannian metric and a compatible almost complex structure. More formally, if \( M \) is a manifold, it is said to be nearly Kähler if it possesses the following structures: 1. **Riemannian Metric**: A Riemannian metric \( g \) on \( M \), which provides a way to measure distances and angles.
"Polar action" typically refers to actions or activities that are directly related to the polar regions of the Earth, including the Arctic and Antarctic. This can encompass a range of topics, including climate change and its impact on polar ecosystems, scientific research conducted in these regions, conservation efforts, and issues related to indigenous communities living in polar areas.
Ricci calculus, also known as tensor calculus, is a mathematical framework used primarily in the field of differential geometry and theoretical physics. It provides a systematic way to handle tensors, which are mathematical objects that can be used to represent various physical quantities, including those in general relativity and continuum mechanics. The term "Ricci calculus" is often associated with the work of the Italian mathematician Gregorio Ricci-Curbastro, who developed the formalism in the late 19th century.
CLCNKB is a gene that encodes the Chloride Channel 2, which is part of the CLC (Chloride Channel) family of proteins. CLCNKB is primarily expressed in the kidney and plays a crucial role in regulating chloride ion transport in epithelial tissues. This gene is involved in kidney function, specifically in the reabsorption of chloride ions, which is essential for maintaining fluid and electrolyte balance in the body.
CLIC4, or Chloride Intracellular Channel 4, is a protein that is part of the CLIC (Chloride Intracellular Channel) family. It functions primarily as a chloride ion channel, playing a role in cellular processes such as ion transport, volume regulation, and cell signaling. CLIC4 is unique among its family members because it is also believed to have functions related to cell proliferation and differentiation, as well as involvement in various pathological conditions, including cancer.
Cyclic nucleotide-gated channel alpha 3 (CNGA3) is a protein that forms a part of the ion channel complex involved in sensory transduction, particularly in photoreceptors in the retina. It is one of the alpha subunits of the cyclic nucleotide-gated (CNG) channels, which are sensitive to cyclic nucleotides such as cyclic AMP (cAMP) and cyclic GMP (cGMP).
F15845 does not correspond to a widely recognized product, term, or concept in my training data. It might be a specific identifier, a product code, a model number, or something relevant to a particular field. If you can provide more context or specify the category (e.g., technology, science, literature, etc.
ITPR1, or Inositol 1,4,5-trisphosphate receptor type 1, is a protein that in humans is encoded by the ITPR1 gene. It is part of a family of inositol trisphosphate receptors that play a critical role in cellular signaling.
KCNH6, also known as potassium voltage-gated channel subfamily H member 6, is a gene that encodes a protein belonging to the family of voltage-gated potassium channels. These channels are crucial for the regulation of electrical excitability in various types of cells, particularly in neurons and muscle cells.
Q-type calcium channels are a specific class of voltage-gated calcium channels that play a significant role in mediating the influx of calcium ions (Ca²⁺) into cells in response to membrane depolarization. They are primarily found in neurons and certain types of muscle cells and are integral to various physiological processes, including neurotransmitter release, muscle contraction, and the generation of electrical signals.
Majid Shahriari is an Iranian physicist known for his contributions to the field of nanotechnology and materials science. His work often intersects with quantum mechanics and the development of new materials with unique properties. In addition to his research, he has been involved in various academic activities, including teaching and mentoring students in scientific disciplines.
The Iraq disarmament crisis refers to a series of events and tensions primarily in the late 1990s and early 2000s regarding Iraq’s compliance with United Nations resolutions concerning its weapons of mass destruction (WMD) programs, particularly after the Gulf War in 1991. The crisis intensified in the lead-up to the 2003 invasion of Iraq.
Hussain al-Shahristani is an Iraqi politician and a prominent figure in Iraq's energy sector. He served as Iraq's Minister of Oil from 2006 to 2010 and has played a significant role in shaping Iraq's oil policies and strategies during and after the U.S.-led invasion of Iraq in 2003.
John Tyndall was a 19th-century Irish physicist and natural philosopher, born on August 2, 1820, and passing away on December 4, 1893. He is best known for his work in areas such as atmospheric physics, thermodynamics, and the study of gases.
The Copeland–Erdős constant is a real number that is constructed by concatenating the prime numbers in sequence. It is named after mathematicians Arthur Copeland and Paul Erdős. The constant is expressed as follows: \[ C = 0.
The Erdős–Borwein constant, often denoted as \( C_{E,B} \), is a mathematical constant that arises in the context of number theory, particularly in relation to certain infinite series and products.
ISO 31-6 is part of the ISO 31 series, which is a standard that provides rules and guidelines for the use of symbols and units of measurement in various fields, particularly in science and technology. Specifically, ISO 31-6 focuses on "Units of Quantity and Their Symbols." This part of the ISO standard deals with the particular units and symbols used to represent physical quantities.
Indium-111 (^{111}In) is a radioactive isotope of indium. It has a half-life of about 2.8 days and decays primarily via electron capture to stable tin-111 (^{111}Sn). Indium-111 is of significant interest in the field of nuclear medicine, particularly for its applications in diagnostic imaging and targeted therapy.
Krypton-85 (Kr-85) is a radioactive isotope of the element krypton, which is a noble gas. It has a mass number of 85, meaning it has 36 protons and 49 neutrons in its nucleus. Krypton-85 is produced naturally in the atmosphere through the interaction of cosmic rays with stable krypton isotopes and is also released into the environment from certain human activities, primarily from nuclear reactors and radiological applications.

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