MusEdit is a music notation software developed for composing, arranging, and editing music. It provides musicians with tools to create sheet music visually, allowing users to input notes, chords, dynamics, and various musical symbols. MusEdit typically includes features such as playback capabilities, the ability to export music in different file formats, and options for creating scores for various instruments.
The Lanalhue Fault is a geological fault located in the southern part of Chile. It is part of the complex tectonic systems that characterize the region, which is influenced by the interactions between the Nazca Plate and the South American Plate. The fault is known for its significance in understanding the seismic activity in the area, as it can generate earthquakes and is associated with the broader context of subduction-related tectonics.
Noteflight is an online music notation software that allows users to compose, arrange, and share music scores easily. It provides a platform for musicians, educators, and students to create sheet music using an intuitive interface. Users can input music using a mouse, keyboard, or MIDI instrument, and the software supports a variety of musical notations, including standard notation, tablature, and chord symbols.
The "edge of chaos" is a concept that arises in the fields of complex systems, chaos theory, and theoretical biology. It refers to a critical state between order and disorder, where systems exhibit complex behavior that can lead to self-organization and adaptability. In the context of dynamical systems, the edge of chaos is characterized by the coexistence of stability and unpredictability.
A mainshock is the largest earthquake event in a seismic sequence, characterized by its significant magnitude and impact. It is often the primary shock that is followed by aftershocks, which are smaller earthquakes that occur in the same general area in the time period following the main shock. Mainshocks can vary widely in size and can lead to considerable damage depending on their magnitude, depth, and location relative to populated areas.
The Global Centroid Moment Tensor (GCMT) is a program that provides a comprehensive catalog of moment tensor solutions for earthquakes worldwide. It focuses on determining the seismic moment tensor from various seismic observations, which characterizes the source of an earthquake and quantifies its focal mechanism—essentially, the type of faulting involved (such as strike-slip, thrust, or normal faulting).
Molecular self-assembly is a process by which molecules spontaneously organize themselves into structured and functional aggregates or patterns without external guidance or direction. This phenomenon occurs due to specific interactions among the constituent molecules, such as hydrogen bonds, ionic interactions, van der Waals forces, and hydrophobic effects. The result is a system that reaches a stable state, often characterized by distinct shapes, phases, or supramolecular structures.
Pattern formation refers to the process by which ordered structures emerge in various natural systems. This phenomenon can be observed in a range of fields, including biology, physics, chemistry, and mathematics. The concept encompasses the mechanisms and principles that lead to the development of organized patterns from initially random states. In biological systems, pattern formation is prevalent in processes such as the development of animal coats (like spots or stripes), the arrangement of cells in tissues, and the morphogenesis of organisms.
Polarity reversal in seismology refers to the phenomenon where the direction of seismic wave propagation changes, leading to a reversal in the sign of the recorded seismic signals. This is particularly relevant in the context of analyzing seismic waves generated by earthquakes or controlled-source seismic experiments. In the context of seismic waves, polarity generally refers to the upward or downward motion of the seismic waves as recorded by seismographs.
The Southern Great Lakes Seismic Zone (SGLSZ) is a region in the northern United States, particularly around the Great Lakes, known for its seismic activity. This area encompasses parts of several states, including southern Michigan, northern Indiana, and northeastern Illinois. The seismic zone is characterized by an elevated rate of small to moderate earthquakes, although it is not as seismically active as areas such as California.
"Chemoton" is a theoretical concept proposed by Hungarian biologist and chemist György Gábor in the 1970s. It refers to a model of primitive life forms and is intended to describe a self-replicating system composed of three essential components: 1. **Genetic Information**: Similar to RNA or DNA, this component serves as the template for replication.
Milton Feng is a prominent figure in the field of electrical engineering and is particularly known for his work in the areas of semiconductor technology and high-frequency electronics. He is a professor at the University of Illinois at Urbana-Champaign and has made significant contributions to the understanding and development of advanced electronic devices, particularly in the field of wireless communications.
Daniel Read could refer to various subjects, including individuals, historical figures, or entities depending on the context. One prominent figure is Daniel Read (1757–1836), an early American composer and music educator known for his contributions to hymnody and shape-note singing. He was influential in the development of American folk music traditions.
Quasicrystals are a fascinating class of materials that exhibit an ordered structure but do not have the periodic arrangement typically associated with crystalline materials. They are defined by their unique atomic arrangements, which can display symmetries that are not possible in conventional crystals. For example, quasicrystals can possess fivefold symmetry, which is forbidden in regular crystals due to the constraints of translational symmetry.
A self-assembled monolayer (SAM) is a structured layer of molecules that spontaneously organizes into a single molecular layer on a substrate. This phenomenon occurs when amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, are placed in a solvent. The molecules align themselves in a specific orientation, forming a stable, ordered arrangement.
Self-assembly of nanoparticles refers to the process by which nanoparticles spontaneously organize themselves into structured patterns or configurations without the need for external guidance or intervention. This phenomenon occurs due to various intermolecular forces, including van der Waals forces, hydrogen bonding, electrostatic interactions, and hydrophobic effects.
Spontaneous order refers to the self-organization that arises in complex systems without central planning or intervention. It is a concept often discussed in economics, philosophy, sociology, and systems theory. The idea is that when individuals act independently based on their own desires, preferences, and knowledge, complex patterns and structures can emerge naturally from their interactions. A commonly cited example of spontaneous order is the market economy. In a free market, individuals pursue their own interests while producing goods and services that others value.
Supramolecular assembly refers to the organized structure formed through non-covalent interactions between molecules, often termed supramolecules. Unlike traditional molecular assembly, which involves covalent bonds, supramolecular chemistry utilizes weaker interactions such as hydrogen bonding, van der Waals forces, π-π stacking, hydrophobic effects, and coordination bonds. This allows for the formation of complex architectures from simpler building blocks.
MNDO stands for Modified Neglect of Diatomic Overlap. It is a quantum chemistry method used for molecular modeling, particularly in the field of computational chemistry. MNDO is a type of semi-empirical method, which means it uses empirical data to simplify the quantum mechanical calculations of molecular systems. The MNDO method approximates the electronic structure of molecules by focusing on the interactions between atoms while neglecting the overlap of electron clouds between certain pairs of atoms.
PM3, or Parameterized Method 3, is a type of semi-empirical quantum chemistry method used for molecular modeling and calculations. It is part of a family of computational techniques that aim to simplify the quantum mechanical calculations needed to predict the behavior and properties of molecules, particularly organic compounds. PM3 is designed to strike a balance between computational efficiency and accuracy. It employs empirical parameters, which are derived from experimental data, to simplify the calculations of molecular orbitals and electronic interactions.

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