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models

A model is an informative representation of an object, person or system. The term originally denoted the plans of a building in late 16th-century English, and derived via French and Italian ultimately from Latin modulus, a measure.
Models can be divided into physical models (e.g. a successful pupil as a role model for others in the school) and abstract models (e.g. mathematical expressions describing behavioural patterns). Abstract or conceptual models are central to philosophy of science, as almost every scientific theory effectively embeds some kind of model of the physical or human sphere.
In commerce, "model" can refer to a specific design of a product as displayed in a catalogue or show room (e.g. Ford Model T), and by extension to the sold product itself.
Types of models include:

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    • obseen16
    • Thread
    • appliance bar boilers combi filling filling loop gas glow glow worm glow-worm glowworm install loops mains manuals models problem secondary spares system valve worm
    • Replies: 2
    • Forum: Plumbing Jobs | The Job-board
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