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Fundamental physics concepts
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Concepts in physics
Force (physics)
Rigid bodies mechanics
Statics
Statics is the branch of mechanics that is concerned with the analysis of loads (force and torque, or "moment") on physical systems in static equilibrium, that is, in a state where the relative positi...
Gravitation
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Rigid body
Brian Cox visits the world's biggest vacuum chamber
Brian Cox visits NASA’s Space Power Facility in Ohio to see what happens when a bowling ball and a feather are dropped together under the conditions of outer space...
Why is this famous physicist tweeting rumors about gravitational waves?
The detection of gravitational waves would be huge, but let's not get too excited.
Can Probability Explain Gravity?
A new theory for gravity. Maybe the father of classical gravity theory Sir Isaac Newton would not agree, but there is a new striking theory in Physics. According to classical physics, gravitation...
Gravitation - Gravity and Branes
Does the weak force of gravity offer evidence of a 10 dimensional world? Find out more now!
Gravitation
Hammer and feather drop: Apollo 15 astronaut David Scott on the Moon enacting the legend of Galileo's gravity experiment. (1.38 MB, ogg/Theora format).Gravity (also called gravitation) is a natural ...
Gravitation - Wikipedia
Rigid body
In physics, a rigid body is an idealization of a solid body in which deformation is neglected. In other words, the distance between any two given points of a rigid body remains constant in time regar...
Statically indeterminate
In statics, a structure is statically indeterminate (or hyperstatic) when the static equilibrium equations are insufficient for determining the internal forces and reactions on that structure.Based on...
Statically indeterminate - Wikipedia
Gravitino
The gravitino (G͂) is the gauge fermion supersymmetric partner of the graviton, as predicted by theories combining general relativity and supersymmetry; i.e. supergravity theories. If it exists...
Burr Arch Truss
The Burr Arch Truss — or simply Burr Truss or Burr Arch — is a combination of an arch and a multiple kingpost truss design. It was invented in 1804 by Theodore Burr, patented on April 3, 1817, and use...
Burr Arch Truss - Wikipedia
Rigid body dynamics
Rigid-body dynamics studies the movement of systems of interconnected bodies under the action of external forces. The assumption that the bodies are rigid, which means that they do not deform under t...
Rigid body dynamics - Wikipedia
List of moment of inertia tensors
In physics and applied mathematics, the mass moment of inertia, usually denoted by I, measures the extent to which an object resists rotational acceleration about an axis, and is the rotational analog...
List of moment of inertia tensors - Wikipedia
Truss arch bridge
A truss arch bridge combines the elements of the truss bridge and the arch bridge. The actual resolution of forces will depend upon the design. If no horizontal thrusting forces are generated this bec...
Truss arch bridge - Wikipedia
Locating the center of mass
There are several methods for locating the center of mass of a body.
This method is useful when one wishes to find the centroid of a complex planar shape with unknown dimensions. It relies on fin...
Locating the center of mass - Wikipedia
Gyroscope
A gyroscope (from Greek γῦρος gûros, "circle" and σκοπέω skopéō, "to look") is a device for measuring or maintaining orientation, based on the principle of preserving angular momentum. Mechanical gyro...
Gyroscope - Wikipedia
Brown truss
A Brown truss is a type of bridge truss, used in covered bridges. It is noted for its economical use of materials and is named after the inventor, Josiah Brown Jr., of Buffalo, New York, who patented ...
Brown truss - Wikipedia
Neutral plane
In mechanics, the neutral plane or neutral surface is a conceptual plane within a beam or cantilever. When loaded by a bending force, the beam bends so that the inner surface is in compression and the...
Neutral plane - Wikipedia
Brunel truss
The Royal Albert Bridge is a railway bridge which spans the River Tamar in England between Plymouth, Devon and Saltash, Cornwall bank. Its unique design consists of two 455 feet (138.7 m) lenticu...
Brunel truss - Wikipedia
Precession
Precession is a change in the orientation of the rotational axis of a rotating body. In an appropriate reference frame it can be defined as a change in the first Euler angle, whereas the third Euler a...
Precession - Wikipedia
Lami's theorem
In statics, Lami's theorem is an equation relating the magnitudes of three coplanar, concurrent and non-collinear forces, which keeps an object in static equilibrium, with the angles directly opposite...
Lami's theorem - Wikipedia
Orbit
In physics, an orbit is the gravitationally curved path of an object around a point in space, for example the orbit of a planet around the center of a star system, such as the Solar System. Orbits of ...
Orbit - Wikipedia
Normal force
In mechanics, the normal force is the component, perpendicular to the surface (surface being a plane) of contact, of the contact force exerted on an object by, for example, the surface of a floor or ...
Normal force - Wikipedia
Generalized coordinates
In analytical mechanics, specifically the study of the rigid body dynamics of multibody systems, the term generalized coordinates refers to the parameters that describe the configuration of the system...
Generalized coordinates - Wikipedia
Euler's equations (rigid body dynamics)
In classical mechanics, Euler's rotation equations are a vectorial quasilinear first-order ordinary differential equation describing the rotation of a rigid body, using a rotating reference frame with...
Truss
In engineering, a truss is a structure that "consists of two-force members only, where the members are organized so that the assemblage as a whole behaves as a single object". A "two-force member" is...
Truss - Wikipedia
Euler-Bernoulli beam equation
Euler–Bernoulli beam theory (also known as engineer's beam theory or classical beam theory) is a simplification of the linear theory of elasticity which provides a means of calculating the load-carryi...
Euler-Bernoulli beam equation - Wikipedia
Levitation
Levitation (from Latin levitas "lightness") is the process by which an object is held aloft, without mechanical support, in a stable position.Levitation is accomplished by providing an upward force th...
Levitation - Wikipedia
Superconductivity
Video of a Meissner effect in a high temperature superconductor (black pellet) with a NdFeB magnet (metallic)Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of ...
Superconductivity - Wikipedia
List of truss types
A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements forming triangular units. The connected elements (typically straight) may be str...
List of truss types - Wikipedia
Plastic bending
Plastic bending is a nonlinear behaviour peculiar to members made of ductile materials that frequently achievemuch greater ultimate bending strength than indicated by a linear elastic bending analysis...
Moment of inertia
The moment of inertia or angular mass of a rigid body determines the torque needed for a desired angular acceleration about a rotational axis. It depends on the body's shape, mass distribution and cho...
Moment of inertia - Wikipedia