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Recently, for about 20 years, museums and art-museums have contributed greatly to the social education in Japan. Especially, we have obtaind great success, in cultural movements in local districts. In recent years, many researches concerning ancient ruins have had remarkable success, and we have got a high reputation for our success in archaeology. We had exhibit many archaeological materials and goods, but we did not have any ideal glass for exhibition cases. Moreover, many art-museums had to be built in the local cities and towns. So we need huge volume of non colored glass and non reflecting glass for the exhibition cases in the museums and art-museums. We succeeded in developing ideal glass for exhibition cases. This glass is now used widely in Japan and worldwide.

Electronic Devices has been geting more popular in our social life. On the other hand they have to be produced higher and more strict specification. Especially, the higher durability is required for electric communication equipments for satelit, underground and submarin, which have to endure as long as 20 years. In contrast, consumer-use equipments is less than 10 years. This is because the fomer is to be used under severer circumstances than the latter. We have frequently an obstacle to reliablity of heavy-duty electronic components. It is called "Out-break of Metal Whisker." This reaction takes place on the surface of electro-plated components which have been left in the field for several years. These whiskers causes short-circuit damages. In this paper we show the results of analysis on damages caused by metal whiskere and propose prevention measures aganst such damages.

Amorphous carbon is made from organic high polymer by the choise of suitable baking condition and atmospher gasses in the baking oben. In the 500℃ baking, organic high polymer shrink itself, and then it set up shrinkage about 25% in bolume in the 1000℃ baking. Baked organic high polymer in the 200℃ has phisical properties as high polymer, but in the 500℃ baking it has the property of carbon, and then in the 1000℃ up baking it has the phisical property of pure carbon. These properties clarified by the IR spectroanalysis. In the 1000℃ up baking it is gorwing up [002] plane, and shows 0.245 nm layers in the molecular structure. These properties clarified by the X-Ray diffraction analysis. And then, in the 2000℃ baking it shows many 0.245 nm layers in its moleculer structure and it is clarified that it grows up as the tape layer by the high power and high resolution electronic microscopic examinations.