Why are Blueprints called Blueprints
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HOME
> > Why are Blueprints called Blueprints
Why are Blueprints called Blueprints
[From: ]
[author: ]
[Date: 12-07-05]
[Hit: ]
......
Title says it all.
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Because at one time Ferro-Gallate, which turns blue when exposed to light, was used in copying drawings.
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Because there prints on blue paper.
1
keywords: Blueprints,Why,are,called,Why are Blueprints called Blueprints
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