ON THE FORMATION AND THE FUNCTIONS OF THE RIPENING SPECKS IN THE SILVER BROMIDE EMULSIONS (Part 1.):THE FORMATION OF THE RIPENING SPECKS

スポンサーリンク

概要

• 論文の詳細を見る

• The silver bromide crystals for the present investigation were prepared by the dilution of the saturated solution of silver bromide in ammonia. When such crystals are exposed to light many bright points appear in the dark field of microscope, and it is known that such bright points show the existence of the photolytic silver which was formed in the crystal defects (structural imperfections). By the observation of the feature of such bright points it was known that the crystal defects are formed at the formation of the crystals in the following way; when silver bromide is precipitated from the concentrated solution it appears as the aggregates of minute crystals and it becomes afterwards apparently single crystals by recrystallization. The crystal defects are formed probably in the contact points of minute crystals in such aggregates and they grow by aggregation on the way of migration to the crystal surface. Silver bromide crystals which are apparently clear in microscope were warmed 2 hours at 60°C in the solution of gelatin containing a trace of sodium thio-sulphate, and it was known that many bright points are ormed by such treatment.<BR>From this results it is clear that silver sulphide specks were formed by the reaction between the silver ions at the crystal defects and the thiosulphate. It was concluded that the ripening specks of silver sulphide are formed at the after-ripening by the reaction between the sulphur compounds contained in gelatin and the silver ions at the crystal defects.

• 社団法人 日本写真学会の論文

社団法人 日本写真学会 | 論文

• Photochromism of Tungsten Oxide Film prepared by Sol-Gel Process II.
• Photochromism of Tungsten Oxide Film Prepared by Sol-gel Process.
• Photography in Astronomy
• Kinetic Analysis of Electron-Detrapping Process of Ir Dopants by ESR Method
• Multispectral Image Acquisition of Paintings Drawn with Natural Mineral Pigments and Its Application

もっと見る

スポンサーリンク