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Encyclopedia > Physical body

A physical body is an object which can be described by the theories of classical mechanics, or quantum mechanics, and experimented upon by physical instruments. This includes the determination of position, and in some cases the orientation in space, as well as means to change these, by exerting forces. Etymology: The word object comes from the latin word objectum a noun form of objectus which in turn comes from objicere, which means to throw or put something before someone. ... In mathematics, theory is used informally to refer to a body of knowledge about mathematics. ... Classical mechanics is a model of the physics of forces acting upon bodies. ... Fig. ... From Latin ex- + -periri (akin to periculum attempt). ... An instrument is a concrete or abstract tool intended for a purpose other than mechanical work, in particular a refined one. ... The word position can have one of several meanings: 2-dimensional or 3-dimensional location; Occupation, Job In finance, a position means entitlement to receive or obligation to deliver an asset or financial instrument, as in long position (ownership) and short position (obligation to deliver); In politics and government a... Orientation can refer to different things. ... The word space has many meanings, including: Physics The definition of space in physics is contentious. ... In physics, a net force acting on a body causes that body to accelerate; that is, to change its velocity. ...


For instance, the force of gravity will accelerate a body if it is not supported, thus causing a change of its position (that is, it falls freely). This article covers the physics of gravitation. ... Acceleration is the time rate of change of velocity, and at any point on a v_t graph, it is given by the gradient of the tangent to that point In physics, acceleration (symbol: a) is defined as the rate of change (or time derivative) of velocity. ...


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  Results from FactBites:
 
AllRefer.com - black body (Physics) - Encyclopedia (440 words)
fl body, in physics, an ideal fl substance that absorbs all and reflects none of the radiant energy falling on it.
Since a fl body is a perfect absorber of radiant energy, by the laws of thermodynamics it must also be a perfect emitter of radiation.
In thermodynamics the principle of the fl body is used to determine the nature and amount of the energy emitted by a heated object.
Ragdoll physics - Wikipedia, the free encyclopedia (768 words)
In computer game engines, ragdoll physics are a type of procedural animation that is often used as a replacement for traditional static death animations.
This had the advantage of low CPU usage, as all that was needed to animate a "dying character" was choose from a set number of pre-drawn animations.
A ragdoll is therefore a collection of multiple rigid bodies (each of which is ordinarily tied to a bone in the graphics engine's skeletal animation system) tied together by a system of constraints that restrict how the bones may move relative to each other.
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