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1:22.6. 2. +. 1⁄2 in ( 64 mm) The smallest scale able to pull real passengers. Was one of the first popular live steam gauges, developed in England in the early 1900s. In terms of model railway operation, gauge 3 is the largest (standard gauge) scenic railway modelling scale, using a scale of 13.5 mm to the foot.
A mathematical model is an abstract description of a concrete system using mathematical concepts and language. The process of developing a mathematical model is termed mathematical modeling. Mathematical models are used in applied mathematics and in the natural sciences (such as physics, biology, earth science, chemistry) and engineering ...
In software engineering , a class diagram[ 1] in the Unified Modeling Language (UML) is a type of static structure diagram that describes the structure of a system by showing the system's classes, their attributes, operations (or methods), and the relationships among objects. The class diagram is the main building block of object-oriented modeling.
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The standard model is a quantum field theory, meaning its fundamental objects are quantum fields, which are defined at all points in spacetime. QFT treats particles as excited states (also called quanta) of their underlying quantum fields, which are more fundamental than the particles. These fields are.
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CHART #4: SIDE-BY-SIDE COMPARISON OF REPUBLICAN CANDIDATESÕ HEALTH PLANS By Susan J. Blumenthal, M.D., Jessica B. Rubin, Michelle E. Treseler, Jefferson Lin, and David Mattos* Sam Brownback Jim Gilmore Duncan Hunter Ron Paul, M.D. Tom Tancredo Stated Goals ! Create a consumer-centered, not government-centered, quality health care model
Scalar field theory. In theoretical physics, scalar field theory can refer to a relativistically invariant classical or quantum theory of scalar fields. A scalar field is invariant under any Lorentz transformation. [ 1] The only fundamental scalar quantum field that has been observed in nature is the Higgs field.