On the Humidity in Wooden Boxes

[摘要] The humidity in the boxes made of Sugi (Japanese cedar), Hinoki (Japanese cypress), Kiri (paulownia) and etc. was observed by hygrographs from Sept, 1941, to Nov. 1942. There was little difference in the humidity variation in each kind of woods and in each size of boxes. When the range of the humidity variation with the period from several days to about half a month in the room is about 20%, that in the box is only about 5%, The range of the seasonal variation is about 20%, in the room and about 15% in the box.

[学科分类] 大气科学