A quantum critical point (QCP) is a theoretical concept in condensed matter physics that denotes a point at zero temperature where a continuous phase transition occurs due to quantum fluctuations. Unlike classical phase transitions that can be influenced by temperature and external parameters (like pressure or magnetic field), quantum critical points are affected primarily by quantum mechanical effects, specifically as they relate to changes in certain control parameters like magnetic field, doping level, or pressure.
The term "company switch" can refer to different concepts depending on the context. Here are a few interpretations: 1. **Business Merger or Acquisition**: In a corporate context, a "company switch" might refer to the merging of two companies or one company acquiring another. This can involve changes in management, branding, and organizational structure. 2. **Employee Transition**: It could also refer to an employee transitioning from one company to another, which is often referred to as switching jobs.
Photoresist is a light-sensitive material used in various photolithography processes, commonly found in the manufacturing of semiconductors, microelectronics, and printed circuit boards. It is applied as a liquid and then coated onto a substrate, such as silicon wafers. Here’s how photoresist works: 1. **Application**: A liquid photoresist is uniformly applied to the surface of a substrate.
Kron reduction is a mathematical technique used in the analysis of graph structures, particularly in the study of electrical networks, control theory, and systems modeling. It is a method for simplifying complex network models by reducing the size of a system while preserving essential properties and dynamics. Specifically, Kron reduction involves the elimination of certain nodes (or vertices) and their associated connections from a network (or graph), resulting in a new, smaller network.
The power-voltage (P-V) curve is a graphical representation used primarily in the context of photovoltaic (PV) systems, which convert solar energy into electrical power. The curve illustrates the relationship between the output power of a solar panel (or an array of panels) and the voltage across its terminals at a given moment under specific conditions of sunlight and temperature. ### Key Components of the P-V Curve: 1. **Voltage (V)**: The electrical potential difference across the solar panel's terminals.
A push switch, also known as a push button switch, is an electrical component that allows users to control the flow of electricity in a circuit with a simple press of a button. When the button is pressed, the circuit is closed, allowing current to flow, and when it is released, the circuit opens, stopping the current.
Cathodic modification, often referred to in the context of electrochemistry and materials science, involves the alteration of the surface properties of a material through a cathodic (reduction) process. This technique can be applied to a variety of substrates, including metals, alloys, and coatings, with the goal of improving specific characteristics such as corrosion resistance, adhesion, and conductivity.
Dithionite, also known as sodium dithionite or sodium hydrosulfite, is a chemical compound with the formula Na2S2O4. It is a white crystalline solid that is soluble in water and is commonly used as a reducing agent in various chemical processes. In industrial applications, dithionite is often utilized in dyeing and bleaching processes, particularly in the textile industry, where it helps to reduce dyes and achieve desired colors on fabrics.
The Wien effect refers to a phenomenon observed in electrolyte solutions, particularly in the context of ion migration. It describes the increased conductivity of an electrolyte solution when it is subjected to a high electric field strength. In essence, as the electric field increases, the ions in the solution are propelled more effectively, leading to enhanced ionic mobility and an increase in conductivity. This effect is particularly notable in very dilute solutions where the interactions between ions are minimal.
The Faraday paradox, in the context of electrochemistry, refers to a phenomenon observed in electrochemical cells where the behavior of electrons and ions appears counterintuitive. Specifically, it highlights how the current and potential relationship deviates from ideal behavior under certain conditions, particularly in the context of reaction kinetics and mass transport.
The Galvanic series is a list that ranks metals and alloys based on their electrochemical potential in a specific electrolyte, typically seawater or other electrolytic solutions. It serves as a reference for understanding how different materials will behave when exposed to corrosive environments, particularly with respect to galvanic corrosion.
Underpotential deposition (UPD) is an electrochemical phenomenon where a metal ion is deposited onto an electrode surface at a potential that is more positive (in a cathodic direction) than the equilibrium potential for the deposition of that metal in a bulk electrochemical process. This occurs typically for a monolayer of metal, often in the presence of another metal that can be deposited at a lower potential.
A Luggin capillary, also known as a Luggin capillary tube or simply a Luggin tube, is a component used in electrochemical measurements, particularly in potentiometry and voltammetry. It consists of a small-diameter capillary that is used to bring a reference electrode (such as a Ag/AgCl electrode) very close to the working electrode without allowing the two to touch.
A potentiometric sensor is a type of sensor used to measure the voltage (potential) in a system, primarily for determining the concentration of a specific ion or chemical species in a solution. These sensors operate on the principle of measuring the electric potential difference between two electrodes that interact with the target ions in a solution.
A strong electrolyte is a substance that fully dissociates into ions when dissolved in water. This means that in solution, it exists entirely as individual ions rather than as intact molecules. Strong electrolytes typically include: 1. **Strong Acids**: These are acids that completely ionize in solution. Examples include hydrochloric acid (HCl), sulfuric acid (H₂SO₄), and nitric acid (HNO₃).
In the context of seismology and tectonics, the term "depth of focus" refers to the depth at which an earthquake's seismic waves originate. More technically, this is often referred to as the "hypocenter" or "focus" of an earthquake. The depth of focus is significant because it influences the earthquake's impact at the surface.
The term "maximum magnitude" can refer to several different concepts depending on the context. Here are a few common interpretations: 1. **Astronomy**: In astronomy, "magnitude" refers to the brightness of a celestial object. The "maximum magnitude" of a star or other astronomical object typically refers to its brightest observed state. For variable stars, this can denote the highest brightness reached during its variability.
Pre-slip is a term used in various fields, but it most commonly refers to a concept in real estate and property management, particularly in the context of lease agreements. In this context, “pre-slip” might refer to the period or considerations that occur before a tenant officially occupies a rental space. It often involves negotiations, preparations for tenancy, and other arrangements that need to be made in anticipation of the lease beginning.
In seismology, "slowness" is a term used to describe the inverse of seismic wave velocity. It is usually expressed in units of seconds per kilometer (s/km). While seismic wave velocity indicates how fast seismic waves travel through the Earth's materials, slowness provides a measure of how much time it takes for the wave to traverse a given distance.
The Journal of Biomaterials Applications is a scientific journal that focuses on the development, characterization, and application of biomaterials in various fields, including medicine, tissue engineering, and drug delivery. The journal publishes original research articles, reviews, and technical notes that cover a wide range of topics related to biomaterials, including their properties, fabrication methods, and interactions with biological systems.

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