The mutochrome for the production of colour designs. (1927)
Adam Hilger, Ltd. · Adam Hilger, Ltd. · leaf 17
decrease of illumination, by the use of a large plano-concave lens placed in front of the lens panel (see Fig. 4). This has the effect of bringing the images into mesh, at the same time maintaining good definition at an increased pro- jection distance. With the plano-concave lens in position, large… … picture. Fig 4 Diagram of Enlarging Lens Two sizes of Enlarging Lens are listed for each type of Mutochrome, viz., for increasing the normal picture of 18 inches square to 3 feet square or to 5 feet square at increased projection distances of 130 inches or 217 inches respectively, the normal…
Photographic equipment · Color reproduction · Wallpaper
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![An illustration from Essai de physique, par Mr. Pierre van Musschenbroek ... avec une description de nouvelles sortes de machines pneumatiques, et un recueil d'expériences par Mr. J. v[an] M[usschenbroek] Traduit du hollandois par Mr. Pierre Massuet .. (1751)](https://img.insideoutlibrary.com/img/200/ia-essaidephysiquep02muss-131-37.webp)
