Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 667
it is agreed thatic is surpassed by no other, for it secures every quality which a photographcan possess.* The minor details of the method can be, and are, infinitelyvaried ; scarcely two experienced photographers will be found workingthe process in identically the same manner throughout. Before… … Fig. 308. description. In its simplest form, Fig. 308, it is merely a rectangular box,in front of which is placed the lens, which slides in a tube, that its posi-tion may be adjusted so as to bring the rays to a focus on the surface of apiece of ground glass at the opposite end. This glass is…
Inventions
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