Observations of the Twilight. (Second Paper)

[摘要] A few years ago, one of the present authors has reported some results of the observation of the twilight, especially the observational data as to the colour, the intensity and the maximum point of the first purpurlight. In this paper the authors calculated the height of the dust sphere by the formula (1). The calculation showed it to be 14.6km.

[学科分类] 大气科学