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"abstract": "An account was recently published by E. P. Wightman and one of us1 concerning the development of silver bromide grains. Motion photomicrographs of the progress of development were made at that time by E. P. Wightman, using a four mm. water immersion objective immersed in a drop of dilute developer placed on a single-grain layer plate. The optical resolution obtainable by this method leaves much to be desired, and the presence of so much liquid between the objective and object slide gives rise to difficulties resulting from vibration and striation. Recently, a method has been devised which permits the use of a 1.8 mm, oil immersion objective. The consequent resolution is considerably enhanced and the difficulties of the former method are minimized.",
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"authors": [
"Clifton Tuttle",
"A. P. H. Trivelli"
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"year": "1928",
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"docTitle": "Motion Photomicrographs of the Progress of Development of a Photographic Image",
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"pages": "157–161",
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