title stringlengths 3 69 | text stringlengths 776 102k | relevans float64 0.76 0.82 | popularity float64 0.96 1 | ranking float64 0.76 0.81 |
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Universal testing machine | A universal testing machine (UTM), also known as a universal tester, universal tensile machine, materials testing machine, materials test frame, is used to test the tensile strength (pulling) and compressive strength (pushing), flexural strength, bending, shear, hardness, and torsion testing, providing valuable data fo... | 0.768943 | 0.991544 | 0.762441 |
FFF system | The furlong–firkin–fortnight (FFF) system is a humorous system of units based on unusual or impractical measurements. The length unit of the system is the furlong, the mass unit is the mass of a firkin of water, and the time unit is the fortnight. Like the SI or metre–kilogram–second systems, there are derived units fo... | 0.773802 | 0.985311 | 0.762436 |
Master equation | In physics, chemistry, and related fields, master equations are used to describe the time evolution of a system that can be modeled as being in a probabilistic combination of states at any given time, and the switching between states is determined by a transition rate matrix. The equations are a set of differential equ... | 0.771584 | 0.988142 | 0.762435 |
Game physics | Computer animation physics or game physics are laws of physics as they are defined within a simulation or video game, and the programming logic used to implement these laws. Game physics vary greatly in their degree of similarity to real-world physics. Sometimes, the physics of a game may be designed to mimic the phy... | 0.779688 | 0.977867 | 0.762432 |
Relativistic quantum mechanics | In physics, relativistic quantum mechanics (RQM) is any Poincaré covariant formulation of quantum mechanics (QM). This theory is applicable to massive particles propagating at all velocities up to those comparable to the speed of light c, and can accommodate massless particles. The theory has application in high energy... | 0.772994 | 0.986335 | 0.762431 |
Anisotropy | Anisotropy is the structural property of non-uniformity in different directions, as opposed to isotropy. An anisotropic object or pattern has properties that differ according to direction of measurement. For example, many materials exhibit very different physical or mechanical properties when measured along different a... | 0.765631 | 0.995805 | 0.762419 |
Exergy | Exergy, often referred to as "available energy" or "useful work potential", is a fundamental concept in the field of thermodynamics and engineering. It plays a crucial role in understanding and quantifying the quality of energy within a system and its potential to perform useful work. Exergy analysis has widespread app... | 0.768732 | 0.991783 | 0.762415 |
Potential flow | In fluid dynamics, potential flow or irrotational flow refers to a description of a fluid flow with no vorticity in it. Such a description typically arises in the limit of vanishing viscosity, i.e., for an inviscid fluid and with no vorticity present in the flow.
Potential flow describes the velocity field as the grad... | 0.769723 | 0.9905 | 0.762411 |
Akinetopsia | Akinetopsia (from Greek akinesia 'absence of movement' and opsis 'seeing'), also known as cerebral akinetopsia or motion blindness, is a term introduced by Semir Zeki to describe an extremely rare neuropsychological disorder, having only been documented in a handful of medical cases, in which a patient cannot perceive ... | 0.768544 | 0.992018 | 0.76241 |
Time of flight | Time of flight (ToF) is the measurement of the time taken by an object, particle or wave (be it acoustic, electromagnetic, etc.) to travel a distance through a medium. This information can then be used to measure velocity or path length, or as a way to learn about the particle or medium's properties (such as compositio... | 0.772583 | 0.986826 | 0.762406 |
Ecology | Ecology is the natural science of the relationships among living organisms, including humans, and their physical environment. Ecology considers organisms at the individual, population, community, ecosystem, and biosphere levels. Ecology overlaps with the closely related sciences of biogeography, evolutionary biology, g... | 0.76311 | 0.999069 | 0.7624 |
MAgPIE | MAgPIE is a non-linear, recursive, dynamic-optimization, global land and water-use model with a cost-minimization objective function.
MAgPIE was developed and is employed by the land-use group working at the Potsdam Institute for Climate Impact Research (PIK). It links regional economic information with grid-based biop... | 0.762791 | 0.999483 | 0.762397 |
DPSIR | DPSIR (drivers, pressures, state, impact, and response model of intervention) is a causal framework used to describe the interactions between society and the environment. It seeks to analyze and assess environmental problems by bringing together various scientific disciplines, environmental managers, and stakeholders, ... | 0.778238 | 0.979639 | 0.762392 |
Cauchy stress tensor | In continuum mechanics, the Cauchy stress tensor (symbol , named after Augustin-Louis Cauchy), also called true stress tensor or simply stress tensor, completely defines the state of stress at a point inside a material in the deformed state, placement, or configuration. The second order tensor consists of nine componen... | 0.764568 | 0.997137 | 0.76238 |
Gifted education | Gifted education (also known as gifted and talented education (GATE), talented and gifted programs (TAG), or G&T education) is a sort of education used for children who have been identified as gifted or talented.
The main approaches to gifted education are enrichment and acceleration. An enrichment program teaches add... | 0.765567 | 0.995837 | 0.76238 |
Rigour | Rigour (British English) or rigor (American English; see spelling differences) describes a condition of stiffness or strictness. These constraints may be environmentally imposed, such as "the rigours of famine"; logically imposed, such as mathematical proofs which must maintain consistent answers; or socially imposed, ... | 0.770842 | 0.989019 | 0.762378 |
Transport theorem | The transport theorem (or transport equation, rate of change transport theorem or basic kinematic equation or Bour's formula, named after: Edmond Bour) is a vector equation that relates the time derivative of a Euclidean vector as evaluated in a non-rotating coordinate system to its time derivative in a rotating refere... | 0.779721 | 0.977741 | 0.762366 |
Oberth effect | In astronautics, a powered flyby, or Oberth maneuver, is a maneuver in which a spacecraft falls into a gravitational well and then uses its engines to further accelerate as it is falling, thereby achieving additional speed. The resulting maneuver is a more efficient way to gain kinetic energy than applying the same imp... | 0.768554 | 0.991937 | 0.762357 |
Uniformitarianism | Uniformitarianism, also known as the Doctrine of Uniformity or the Uniformitarian Principle, is the assumption that the same natural laws and processes that operate in our present-day scientific observations have always operated in the universe in the past and apply everywhere in the universe. It refers to invariance i... | 0.767409 | 0.993408 | 0.762351 |
Hamiltonian Monte Carlo | The Hamiltonian Monte Carlo algorithm (originally known as hybrid Monte Carlo) is a Markov chain Monte Carlo method for obtaining a sequence of random samples whose distribution converges to a target probability distribution that is difficult to sample directly. This sequence can be used to estimate integrals of the ta... | 0.770629 | 0.989254 | 0.762348 |
Time-of-flight mass spectrometry | Time-of-flight mass spectrometry (TOFMS) is a method of mass spectrometry in which an ion's mass-to-charge ratio is determined by a time of flight measurement. Ions are accelerated by an electric field of known strength. This acceleration results in an ion having the same kinetic energy as any other ion that has the sa... | 0.771299 | 0.988391 | 0.762345 |
Orbital speed | In gravitationally bound systems, the orbital speed of an astronomical body or object (e.g. planet, moon, artificial satellite, spacecraft, or star) is the speed at which it orbits around either the barycenter (the combined center of mass) or, if one body is much more massive than the other bodies of the system combine... | 0.765906 | 0.99535 | 0.762344 |
Le Chatelier's principle | In chemistry, Le Chatelier's principle (pronounced or ), also called Chatelier's principle, Braun–Le Chatelier principle, Le Chatelier–Braun principle or the equilibrium law, is a principle used to predict the effect of a change in conditions on chemical equilibrium.
The principle is named after French chemist Henry ... | 0.765448 | 0.995938 | 0.762339 |
Electric Fence | For the physical barrier, see electric fence.
Electric Fence (or eFence) is a memory debugger written by Bruce Perens. It consists of a library which programmers can link into their code to override the C standard library memory management functions. eFence triggers a program crash when the memory error occurs, so a ... | 0.769517 | 0.99067 | 0.762337 |
Fresnel integral | The Fresnel integrals and are two transcendental functions named after Augustin-Jean Fresnel that are used in optics and are closely related to the error function. They arise in the description of near-field Fresnel diffraction phenomena and are defined through the following integral representations:
The parametric ... | 0.768318 | 0.992193 | 0.76232 |
Stochastic electrodynamics | Stochastic electrodynamics (SED) is extends classical electrodynamics (CED) of theoretical physics by adding the hypothesis of a classical Lorentz invariant radiation field having statistical properties similar to that of the electromagnetic zero-point field (ZPF) of quantum electrodynamics (QED).
Key ingredients
Sto... | 0.793952 | 0.960155 | 0.762317 |
Fourth, fifth, and sixth derivatives of position | In physics, the fourth, fifth and sixth derivatives of position are defined as derivatives of the position vector with respect to time – with the first, second, and third derivatives being velocity, acceleration, and jerk, respectively. The higher-order derivatives are less common than the first three; thus their names... | 0.764041 | 0.997741 | 0.762316 |
Pascal's law | Pascal's law (also Pascal's principle or the principle of transmission of fluid-pressure) is a principle in fluid mechanics given by Blaise Pascal that states that a pressure change at any point in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere. The law w... | 0.764907 | 0.996582 | 0.762293 |
Canonical transformation | In Hamiltonian mechanics, a canonical transformation is a change of canonical coordinates that preserves the form of Hamilton's equations. This is sometimes known as form invariance. Although Hamilton's equations are preserved, it need not preserve the explicit form of the Hamiltonian itself. Canonical transformations... | 0.771403 | 0.988183 | 0.762288 |
Wind-turbine aerodynamics | The primary application of wind turbines is to generate energy using the wind. Hence, the aerodynamics is a very important aspect of wind turbines. Like most machines, wind turbines come in many different types, all of them based on different energy extraction concepts.
Though the details of the aerodynamics depend v... | 0.774648 | 0.983997 | 0.762251 |
Kolmogorov microscales | In fluid dynamics, Kolmogorov microscales are the smallest scales in turbulent flow. At the Kolmogorov scale, viscosity dominates and the turbulence kinetic energy is dissipated into thermal energy. They are defined by
where
is the average rate of dissipation of turbulence kinetic energy per unit mass, and
is the ... | 0.773451 | 0.985517 | 0.762249 |
Orbital elements | Orbital elements are the parameters required to uniquely identify a specific orbit. In celestial mechanics these elements are considered in two-body systems using a Kepler orbit. There are many different ways to mathematically describe the same orbit, but certain schemes, each consisting of a set of six parameters, are... | 0.765884 | 0.995254 | 0.762249 |
Bioenergetic systems | Bioenergetic systems are metabolic processes that relate to the flow of energy in living organisms. Those processes convert energy into adenosine triphosphate (ATP), which is the form suitable for muscular activity. There are two main forms of synthesis of ATP: aerobic, which uses oxygen from the bloodstream, and anaer... | 0.781371 | 0.975526 | 0.762247 |
Lightning | Lightning is a natural phenomenon formed by electrostatic discharges through the atmosphere between two electrically charged regions, either both in the atmosphere or one in the atmosphere and one on the ground, temporarily neutralizing these in a near-instantaneous release of an average of between 200 megajoules and 7... | 0.762718 | 0.99937 | 0.762237 |
Venturi effect | The Venturi effect is the reduction in fluid pressure that results when a moving fluid speeds up as it flows through a constricted section (or choke) of a pipe. The Venturi effect is named after its discoverer, the 18th-century Italian physicist Giovanni Battista Venturi.
The effect has various engineering application... | 0.763616 | 0.998174 | 0.762222 |
Gustav Kirchhoff | Gustav Robert Kirchhoff (; 12 March 1824 – 17 October 1887) was a German physicist and mathematician who contributed to the fundamental understanding of electrical circuits, spectroscopy, and the emission of black-body radiation by heated objects.
He coined the term black-body radiation in 1860.
Several different set... | 0.766555 | 0.994332 | 0.762211 |
Oxford Calculators | The Oxford Calculators were a group of 14th-century thinkers, almost all associated with Merton College, Oxford; for this reason they were dubbed "The Merton School". These men took a strikingly logical and mathematical approach to philosophical problems.
The key "calculators", writing in the second quarter of the 14th... | 0.7889 | 0.966156 | 0.762201 |
Stokes flow | Stokes flow (named after George Gabriel Stokes), also named creeping flow or creeping motion, is a type of fluid flow where advective inertial forces are small compared with viscous forces. The Reynolds number is low, i.e. . This is a typical situation in flows where the fluid velocities are very slow, the viscosities ... | 0.769828 | 0.990052 | 0.762169 |
Atmospheric convection | Atmospheric convection is the result of a parcel-environment instability (temperature difference layer) in the atmosphere. Different lapse rates within dry and moist air masses lead to instability. Mixing of air during the day expands the height of the planetary boundary layer, leading to increased winds, cumulus cloud... | 0.771352 | 0.988091 | 0.762166 |
ICanHazPDF | #ICanHazPDF is a hashtag used on Twitter to request access to academic journal articles which are behind paywalls. It began in 2011 by scientist Andrea Kuszewski. The name is derived from the meme I Can Has Cheezburger?
Process
Users request articles by tweeting an article's title, DOI or other linked information like... | 0.770744 | 0.988868 | 0.762164 |
Ultra-high vacuum | Ultra-high vacuum (often spelled ultrahigh in American English, UHV) is the vacuum regime characterised by pressures lower than about . UHV conditions are created by pumping the gas out of a UHV chamber. At these low pressures the mean free path of a gas molecule is greater than approximately 40 km, so the gas is in fr... | 0.770438 | 0.989242 | 0.76215 |
Axial tilt | In astronomy, axial tilt, also known as obliquity, is the angle between an object's rotational axis and its orbital axis, which is the line perpendicular to its orbital plane; equivalently, it is the angle between its equatorial plane and orbital plane. It differs from orbital inclination.
At an obliquity of 0 degrees... | 0.76402 | 0.99755 | 0.762149 |
Landslide | Landslides, also known as landslips, or rockslides, are several forms of mass wasting that may include a wide range of ground movements, such as rockfalls, mudflows, shallow or deep-seated slope failures and debris flows. Landslides occur in a variety of environments, characterized by either steep or gentle slope gradi... | 0.762988 | 0.998866 | 0.762123 |
The Road to Reality | The Road to Reality: A Complete Guide to the Laws of the Universe is a book on modern physics by the British mathematical physicist Roger Penrose, published in 2004. It covers the basics of the Standard Model of particle physics, discussing general relativity and quantum mechanics, and discusses the possible unificatio... | 0.778926 | 0.978409 | 0.762109 |
Thrust vectoring | Thrust vectoring, also known as thrust vector control (TVC), is the ability of an aircraft, rocket or other vehicle to manipulate the direction of the thrust from its engine(s) or motor(s) to control the attitude or angular velocity of the vehicle.
In rocketry and ballistic missiles that fly outside the atmosphere, ae... | 0.764874 | 0.996368 | 0.762095 |
Reciprocating motion | Reciprocating motion, also called reciprocation, is a repetitive up-and-down or back-and-forth linear motion. It is found in a wide range of mechanisms, including reciprocating engines and pumps. The two opposite motions that comprise a single reciprocation cycle are called strokes.
A crank can be used to convert into... | 0.771907 | 0.987276 | 0.762085 |
Viscoelasticity | In materials science and continuum mechanics, viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoing deformation. Viscous materials, like water, resist both shear flow and strain linearly with time when a stress is applied. Elastic materials strain when stretc... | 0.765623 | 0.995326 | 0.762045 |
Kepler problem | In classical mechanics, the Kepler problem is a special case of the two-body problem, in which the two bodies interact by a central force that varies in strength as the inverse square of the distance between them. The force may be either attractive or repulsive. The problem is to find the position or speed of the two... | 0.772299 | 0.986711 | 0.762036 |
Faint young Sun paradox | The faint young Sun paradox or faint young Sun problem describes the apparent contradiction between observations of liquid water early in Earth's history and the astrophysical expectation that the Sun's output would be only 70 percent as intense during that epoch as it is during the modern epoch. The paradox is this: w... | 0.770605 | 0.988879 | 0.762034 |
Debye length | In plasmas and electrolytes, the Debye length (Debye radius or Debye–Hückel screening length), is a measure of a charge carrier's net electrostatic effect in a solution and how far its electrostatic effect persists. With each Debye length the charges are increasingly electrically screened and the electric potential d... | 0.766372 | 0.994332 | 0.762028 |
Michael Crichton | John Michael Crichton (; October 23, 1942 – November 4, 2008) was an American author, screenwriter and filmmaker. His books have sold over 200 million copies worldwide, and over a dozen have been adapted into films. His literary works heavily feature technology and are usually within the science fiction, techno-thrille... | 0.762176 | 0.999804 | 0.762027 |
Eyring equation | The Eyring equation (occasionally also known as Eyring–Polanyi equation) is an equation used in chemical kinetics to describe changes in the rate of a chemical reaction against temperature. It was developed almost simultaneously in 1935 by Henry Eyring, Meredith Gwynne Evans and Michael Polanyi. The equation follows fr... | 0.770157 | 0.989425 | 0.762012 |
Self-energy | In quantum field theory, the energy that a particle has as a result of changes that it causes in its environment defines self-energy , and represents the contribution to the particle's energy, or effective mass, due to interactions between the particle and its environment. In electrostatics, the energy required to asse... | 0.777439 | 0.980153 | 0.76201 |
Inductance | Inductance is the tendency of an electrical conductor to oppose a change in the electric current flowing through it. The electric current produces a magnetic field around the conductor. The magnetic field strength depends on the magnitude of the electric current, and follows any changes in the magnitude of the current.... | 0.76337 | 0.998207 | 0.762001 |
Lindbladian | In quantum mechanics, the Gorini–Kossakowski–Sudarshan–Lindblad equation (GKSL equation, named after Vittorio Gorini, Andrzej Kossakowski, George Sudarshan and Göran Lindblad), master equation in Lindblad form, quantum Liouvillian, or Lindbladian is one of the general forms of Markovian master equations describing open... | 0.768454 | 0.991577 | 0.761981 |
Negentropy | In information theory and statistics, negentropy is used as a measure of distance to normality. The concept and phrase "negative entropy" was introduced by Erwin Schrödinger in his 1944 popular-science book What is Life? Later, French physicist Léon Brillouin shortened the phrase to néguentropie (negentropy). In 1974,... | 0.768587 | 0.991384 | 0.761965 |
Bragg's law | In many areas of science, Bragg's law, Wulff–Bragg's condition, or Laue–Bragg interference are a special case of Laue diffraction, giving the angles for coherent scattering of waves from a large crystal lattice. It describes how the superposition of wave fronts scattered by lattice planes leads to a strict relation bet... | 0.764369 | 0.996844 | 0.761957 |
Physical education | Physical education, often abbreviated to Phys. Ed. or PE, and sometimes informally referred to as gym class or simply just gym, is a subject taught in schools around the world. PE is taught during primary and secondary education and encourages psychomotor, cognitive, and effective learning through physical activity and... | 0.76335 | 0.998174 | 0.761956 |
Physical vapor deposition | Physical vapor deposition (PVD), sometimes called physical vapor transport (PVT), describes a variety of vacuum deposition methods which can be used to produce thin films and coatings on substrates including metals, ceramics, glass, and polymers. PVD is characterized by a process in which the material transitions from ... | 0.76631 | 0.994314 | 0.761953 |
Fick's laws of diffusion | Fick's laws of diffusion describe diffusion and were first posited by Adolf Fick in 1855 on the basis of largely experimental results. They can be used to solve for the diffusion coefficient, . Fick's first law can be used to derive his second law which in turn is identical to the diffusion equation.
Fick's first law:... | 0.763214 | 0.998341 | 0.761948 |
Standard gravity | The standard acceleration of gravity or standard acceleration of free fall, often called simply standard gravity and denoted by or , is the nominal gravitational acceleration of an object in a vacuum near the surface of the Earth. It is a constant defined by standard as . This value was established by the 3rd General ... | 0.765373 | 0.995505 | 0.761932 |
Yerkes–Dodson law | The Yerkes–Dodson law is an empirical relationship between arousal and performance, originally developed by psychologists Robert M. Yerkes and John Dillingham Dodson in 1908. The law dictates that performance increases with physiological or mental arousal, but only up to a point. When levels of arousal become too high,... | 0.766982 | 0.993401 | 0.761921 |
Magnetism | Magnetism is the class of physical attributes that occur through a magnetic field, which allows objects to attract or repel each other. Because both electric currents and magnetic moments of elementary particles give rise to a magnetic field, magnetism is one of two aspects of electromagnetism.
The most familiar effec... | 0.763344 | 0.998118 | 0.761907 |
Tempora mutantur | Tempora mutantur is a Latin adage that refers to the changes brought about by the passage of time. It also appears in various longer hexametric forms, most commonly Tempora mutantur, nos et mutamur in illis, meaning "Times are changed; we also are changed with them". This hexameter is not found in Classical Latin, but ... | 0.774284 | 0.98401 | 0.761903 |
Bohr–Sommerfeld model | The Bohr–Sommerfeld model (also known as the Sommerfeld model or Bohr–Sommerfeld theory) was an extension of the Bohr model to allow elliptical orbits of electrons around an atomic nucleus. Bohr–Sommerfeld theory is named after Danish physicist Niels Bohr and German physicist Arnold Sommerfeld. Sommerfeld showed that,... | 0.771043 | 0.988145 | 0.761903 |
Cyclotron resonance | Cyclotron resonance describes the interaction of external forces with charged particles experiencing a magnetic field, thus moving on a circular path. It is named after the cyclotron, a cyclic particle accelerator that utilizes an oscillating electric field tuned to this resonance to add kinetic energy to charged parti... | 0.774971 | 0.983094 | 0.76187 |
Neural radiance field | A neural radiance field (NeRF) is a method based on deep learning for reconstructing a three-dimensional representation of a scene from two-dimensional images. The NeRF model enables downstream applications of novel view synthesis, scene geometry reconstruction, and obtaining the reflectance properties of the scene. Ad... | 0.766941 | 0.993384 | 0.761866 |
Einstein–Oppenheimer relationship | Albert Einstein and J. Robert Oppenheimer were twentieth century physicists who made pioneering contributions to physics. From 1947 to 1955 they had been colleagues at the Institute for Advanced Study (IAS). Belonging to different generations, Einstein and Oppenheimer became representative figures for the relationship ... | 0.768345 | 0.991568 | 0.761866 |
Blake Crouch | William Blake Crouch (born October 15, 1978) is an American author known for books such as Dark Matter, Recursion, Upgrade, and his Wayward Pines Trilogy, which was adapted into a television series in 2015. Dark Matter was adapted for television in 2024.
Early life and education
Crouch was born near the town of States... | 0.763768 | 0.997506 | 0.761864 |
Swing equation | A power system consists of a number of synchronous machines operating synchronously under all operating conditions. Under normal operating conditions, the relative position of the rotor axis and the resultant magnetic field axis is fixed. The angle between the two is known as the power angle, torque angle, or rotor an... | 0.781362 | 0.975029 | 0.76185 |
Power-to-X | Power-to-X (also P2X and P2Y) are electricity conversion, energy storage, and reconversion pathways from surplus renewable energy.
Power-to-X conversion technologies allow for the decoupling of power from the electricity sector for use in other sectors (such as transport or chemicals), possibly using power that has be... | 0.770867 | 0.988276 | 0.76183 |
Theory of impetus | The theory of impetus is an auxiliary or secondary theory of Aristotelian dynamics, put forth initially to explain projectile motion against gravity. It was introduced by John Philoponus in the 6th century, and elaborated by Nur ad-Din al-Bitruji at the end of the 12th century. The theory was modified by Avicenna in th... | 0.776802 | 0.980724 | 0.761828 |
Scattering | In physics, scattering is a wide range of physical processes where moving particles or radiation of some form, such as light or sound, are forced to deviate from a straight trajectory by localized non-uniformities (including particles and radiation) in the medium through which they pass. In conventional use, this also ... | 0.76562 | 0.995039 | 0.761822 |
How Not to Be Wrong | How Not to Be Wrong: The Power of Mathematical Thinking, written by Jordan Ellenberg, is a New York Times Best Selling book that connects various economic and societal philosophies with basic mathematics and statistical principles.
Summary
How Not to Be Wrong explains the mathematics behind some of simplest day-to-da... | 0.778208 | 0.978937 | 0.761816 |
Naturally aspirated engine | A naturally aspirated engine, also known as a normally aspirated engine, and abbreviated to N/A or NA, is an internal combustion engine in which air intake depends solely on atmospheric pressure and does not have forced induction through a turbocharger or a supercharger.
Description
In a naturally aspirated engine, a... | 0.764657 | 0.996266 | 0.761802 |
D'Alembert operator | In special relativity, electromagnetism and wave theory, the d'Alembert operator (denoted by a box: ), also called the d'Alembertian, wave operator, box operator or sometimes quabla operator (cf. nabla symbol) is the Laplace operator of Minkowski space. The operator is named after French mathematician and physicist Jea... | 0.769393 | 0.990127 | 0.761796 |
Airfoil | An airfoil (American English) or aerofoil (British English) is a streamlined body that is capable of generating significantly more lift than drag. Wings, sails and propeller blades are examples of airfoils. Foils of similar function designed with water as the working fluid are called hydrofoils.
When oriented at a sui... | 0.763922 | 0.997213 | 0.761793 |
VALS | VALS (Values and Lifestyle Survey) is a proprietary research methodology used for psychographic market segmentation. Market segmentation is designed to guide companies in tailoring their products and services in order to appeal to the people most likely to purchase them.
History and description
VALS was developed in 1... | 0.76963 | 0.989805 | 0.761783 |
Electromagnetic tensor | In electromagnetism, the electromagnetic tensor or electromagnetic field tensor (sometimes called the field strength tensor, Faraday tensor or Maxwell bivector) is a mathematical object that describes the electromagnetic field in spacetime. The field tensor was first used after the four-dimensional tensor formulation ... | 0.765577 | 0.995032 | 0.761774 |
Zeno's paradoxes | Zeno's paradoxes are a series of philosophical arguments presented by the ancient Greek philosopher Zeno of Elea (c. 490–430 BC), primarily known through the works of Plato, Aristotle, and later commentators like Simplicius of Cilicia. Zeno devised these paradoxes to support his teacher Parmenides's philosophy of monis... | 0.762472 | 0.999071 | 0.761763 |
Hess's law | Hess’ law of constant heat summation, also known simply as Hess' law, is a relationship in physical chemistry named after Germain Hess, a Swiss-born Russian chemist and physician who published it in 1840. The law states that the total enthalpy change during the complete course of a chemical reaction is independent of t... | 0.769262 | 0.990237 | 0.761752 |
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