On the report part I authors gives general examinations with combination between color photography and color television.
On this paper authors tried few treatment to investigate the transfer charactor from color film to tricolor CRT in the NTSC Color Television System.
The color dyes which are employed in color film show usually a amount of unwanted spectral absorption. This unwanted spectral absorption of dye has much consequence to transfer gradient and color reproducting qualities.
Several kinds of color printing type films and NTSC Color Television monitor were employed for our treatment.
And we get similar result for our expectation with relations between color film images and CRT images.

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Gamma-rays emitted from isotopes ¹³⁷Cs and ⁶⁰Co, and electron beam of a electron-microscope were used to examine the solarization of a x-ray film due to those rays.
Observations of Ehrlich that the solarization promotes as the x-ray exposure rate decreases, have been also confirmed for the gamma-ray exposures and electron beam exposures.
For the gamma-ray exposures, it was newly observed that there exists an optimum exposure rate to which the strongest solarization occurs, and that the degree of solarization decreases as the gamma-ray exposure rate is either higher or lower than the optimum rate.

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Silver azide emulsions are prepared without ripening and their light sensitivity as well gamma-ray sensitivity are studied. Silver azide emulsions are developable by weak alkaline metol developers without sulfite, for example: metol 3 g, ascorbic acid 2 g, sodium carbonate 2 g, sodium chloride 1g in 1, 000 cc developer. Emulsions made of inert type gelatins show higher sensitivity than those with active gelatins, and addition of oxalic acid, tartaric acid, citric acid or acetic acid increase both the light sensitivity and the gamma-ray sensitivity. The emulsions are sensitive to gamma-rays emitted from a radioisotope of ⁶⁰Co having dose rate of 56, 000 r/hr, and become developable when the emulsions are exposed to a dose of irradiation of about 10⁴ to 10⁵ r.

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The effects of lead salt on extremely fine grain silver-bromide emulsions which were made with silver nitrate solutions containing 0-0.1 mol% lead nitrate (based on silver nitrate) were investigated. On the fine grain emulsions the effects of lead salt were different from those on the coarse grain emulsions reported in the 1 st. paper; that is, by addition of lead salt (0.004-0.02 mol%), (1) sensitivity to X-ray was increased about two fold, while (2) sensitivity to light was not affected and (3) sensitivity to ⁶⁰Coγ-ray was slightly increased but the degree of increase in sensitivity was much less than that obtained in the 1 st. paper.
Two kinds of fused silver bromide crystals were made by melting precipitates prepared by using potassium bromide solutions and silver nitrate solutions containing no and 0.02 mol% lead nitrate respectively. By additon of lead salt:(1) sensitivity to light or X-ray was greatly decreased, and sensitizing effect to X-ray, such as obtained with emulsion, was not gained, and (2) the degree of solarization was decreased, which was the same result obtained in the 3 rd. paper.
It is supposed that the mobil silver ion which contributes to the ionic process of the latent image formation is not only the interstitial silver ion but slso the surface silver ion and so the dependence of the effect of lead salt on crystal size is caused by the difference of specific surface area.

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The distance to observe exhibited pictorial photographs was investigated. The relation between observing distance l (cm) and picture size d (diagonal length in cm): d =0.00885×l²-0.02×l-4.03 was derived.

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