TNT equivalent is a measure used to compare the energy released in an explosion with the energy released by TNT (trinitrotoluene), which is a widely used explosive. The term is often used in contexts such as nuclear explosions, bomb testing, or large-scale industrial accidents to provide a frame of reference for the magnitude of the explosion. Different materials release energy in different amounts when they explode.
A cup is a unit of measurement commonly used in cooking and baking to quantify volume. It is part of the Imperial and U.S. customary systems. In these systems, one cup is equivalent to: - **U.S. customary cup:** 240 milliliters (ml) - **Imperial cup (used in the UK):** 284.
Archimedes' principle states that an object submerged in a fluid experiences an upward buoyant force equal to the weight of the fluid that the object displaces. This principle explains why objects float or sink in a fluid. In essence, when an object is placed in a fluid (liquid or gas), it pushes some of the fluid out of the way. The weight of the fluid that is displaced creates an upward force on the object.
The term "contact area" can refer to different concepts depending on the context in which it is used. Here are a few interpretations: 1. **Physics and Engineering**: In physics, the contact area refers to the surface area where two objects make contact. This area can influence friction, pressure distribution, and heat transfer. For example, in mechanics, the contact area between a tire and road surface affects traction and wear.
In physics, drag refers to the resistance experienced by an object moving through a fluid, which can be a liquid or a gas. This force opposes the motion of the object and is often due to the viscosity of the fluid and the object's shape and speed. Drag is a critical factor in various fields, including aerodynamics, hydrodynamics, and engineering.
In physics, a force field refers to a region of space where a force is exerted on an object. This can include gravitational fields, electric fields, magnetic fields, and more. Each type of force field arises from different physical phenomena: 1. **Gravitational Field**: This is produced by masses, where the force of gravity acts on other masses within the field.
The Irresistible Force Paradox, also known as the "unstoppable force paradox," is a philosophical and logical dilemma that arises when considering the concepts of two absolute forces. The classic formulation poses the question: What happens when an irresistible force meets an immovable object? Here’s a breakdown of the paradox: 1. **Irresistible Force**: This is defined as a force that cannot be resisted or stopped by any object.
Non-contact forces are forces that act on an object without physical contact between the objects involved. These forces can affect the motion of objects from a distance. Common examples of non-contact forces include: 1. **Gravitational Force**: This is the force of attraction between two masses. For example, the Earth exerts a gravitational force on objects, which is why they fall towards the ground.
Tidal force refers to the gravitational effect that one celestial body exerts on another due to the differential gravitational pull exerted on different parts of the object being influenced. This force arises from the fact that the gravitational attraction of a massive body, like the Moon or the Sun, varies with distance.
In geometry, "position" typically refers to the location of a point or object in a given space relative to a coordinate system or reference frame. Here's a breakdown of concepts related to position in geometry: 1. **Point**: The most basic element in geometry, a point has no dimensions and represents a specific location in space. 2. **Coordinates**: The position of a point is often described using coordinates.
DBFS stands for Databricks File System. It is a distributed file system that provides scalable and reliable storage for data in Databricks environments. DBFS allows users to store data files (such as CSV, Parquet, JSON, etc.) and access them seamlessly from their notebooks and jobs running in a Databricks cluster.
A decade in a logarithmic scale refers to a multiplicative factor of ten. In mathematics and science, logarithmic scales are often used to represent data that spans multiple orders of magnitude. For example, when dealing with phenomena like earthquakes (Richter scale), sound intensity (decibels), or pH levels, a logarithmic scale simplifies the representation of very large or very small numbers. In a logarithmic scale, each unit increment represents a tenfold increase or decrease.
The Richter scale is a logarithmic scale used to measure the magnitude of earthquakes. Developed in 1935 by Charles F. Richter, the scale quantifies the amount of energy released during an earthquake, which is referred to as the seismic wave magnitude. The scale is logarithmic, meaning that each whole number increase on the scale corresponds to a tenfold increase in the amplitude of the seismic waves recorded by a seismograph. For example, an earthquake measuring 6.
Sheet resistance is a measure of the resistance of a thin sheet of material, typically used to characterize thin films, conductive coatings, or semiconductor materials. It is an important parameter in fields such as electronics, materials science, and photovoltaics. Sheet resistance is denoted by the symbol \( R_s \) and is expressed in ohms per square (Ω/□).
"10 on Broadway" typically refers to a theatrical performance or production associated with the number 10. However, without specific context, it’s unclear what particular production or concept you are referencing. It could relate to a show, a musical piece, or an event linked to Broadway. If "10 on Broadway" pertains to a specific musical, play, or event, please provide more details for a more precise answer.
Variable-range hopping (VRH) is a transport mechanism commonly observed in disordered systems, such as insulators or semiconductors with localized electronic states. In these materials, charge carriers do not have enough energy to move freely, leading to a situation where conduction occurs through hopping between localized states rather than through band conduction. In VRH, the primary mechanism of charge transport involves the hopping of electrons (or holes) over varying distances, which can be influenced by the local energy landscape.
Lepton number is a conserved quantum number in particle physics that is used to describe the number of leptons in a system. Leptons are a family of elementary particles that include charged leptons (such as electrons, muons, and tau particles) and neutral leptons (such as neutrinos). The lepton number is defined as follows: - Each lepton (such as an electron or a neutrino) has a lepton number of +1.
"Whey" is not a standard unit of measurement. However, it seems like you might be referring to "whey" in the context of dairy products. Whey is the liquid byproduct that remains after milk has been curdled and strained during the cheese-making process. It contains water, lactose, proteins, vitamins, and minerals. Whey protein is particularly popular as a dietary supplement among athletes and bodybuilders due to its high protein content and quick absorption by the body.
The nuclear magnetic moment is a property of atomic nuclei that reflects their magnetic characteristics. It is a measure of the strength and orientation of a nucleus's intrinsic magnetic field, which arises from the spin and orbital angular momentum of its constituent protons and neutrons. Key points about nuclear magnetic moments include: 1. **Origin**: The nuclear magnetic moment is primarily due to the spin of the protons and neutrons in the nucleus, though it can also involve the orbital motion of these particles.
Friction torque refers to the torque that opposes the motion of a rotating object due to friction between surfaces in contact. It is a crucial concept in mechanics and engineering, particularly when analyzing systems involving rotating machinery, such as motors, gears, and bearings. When two surfaces come into contact and one attempts to move relative to the other, frictional forces act at the interface. This can produce a torque that resists this relative motion.

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 5. . 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.
  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