Dictionary Meaning and Definition on 'Blueprints'
Wikipedia Meaning and Definition on 'Blueprints'
A blueprint is a type of paper-based reproduction usually of a technical drawing, documenting an architecture or an engineering design. More generally, the term "blueprint" has come to be used to refer to any detailed plan.
Various base materials have been used for blueprints. Paper was a common choice; for more durable prints linen was sometimes used, but with time, the linen prints would shrink slightly. To combat this problem, printing on imitation vellum and, later, polyester film (Mylar) was implemented.
In 1861 Alphonse Louis Poitevin, a french chemist, found that ferro-gallate in gum is light sensitive . Light turns this to an insoluble permanent blue. A coating of this chemical on a paper or other base may be used to reproduce an image from a translucent document.[See more about Blueprints at Dictionary 3.0 Encyclopedia]
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