Abstract
LONDON Royal Society, April 26. F. W. P. GOTZ, A. R. MEETHAM and G. M. B. DOBSON. Vertical distribution of ozone in the atmosphere. A method has been developed for finding the average height of the ozone in the earth's atmosphere and also the general character of its vertical distribution. This method uses spectroscopic measurements of the light of the clear blue zenith sky as the sun is rising or setting. The necessary observations have been taken in Switzerland over the space of a year and the height and vertical distribution have been calculated. The average height is found to be about 22 km. above sea-level and most of the ozone exists between the ground level and 40 km. The vertical distribution depends on the total amount of ozone present, but apparently not greatly on other factors. F. P. BQWDEN and C. P. SNOW: Physico-chemical studies of complex organic molecules (1). A method is described for the production of monochromatic light of sufficient intensity to bring about reasonably rapid photochemical changes. The irradiation can be performed on very small amounts of material, and the progress of the reaction followed spectroscopically. Selective monochromatic irradiation is applied to some of the large molecules of biological importance, notably ergosterol and calciferol, vitamin B, carotene and vitamin A. F. P. BOWDEN and S. D. D. MORRIS: Physico-chemical studies of complex organic molecules (2). The absorption spectra of some important biological molecules have been measured at liquid air temperature. The bands of (3 carotene (in ethyl alcohol) become narrower and shift to 4990 A., 4670 A. and 4350 A., and a new band appears at 4060 A. The ultra-violet band at 2700 A. becomes sharper but is little displaced. The main band of vitamin A concentrates at 3280 A. is shifted to 3350 A. and new structured bands appear at 2900 A., 2770 A., 2580 A., 2510 A. and 2430 A. The absorption spectrum of vitamin E concentrates is due to several different molecules and some progress has been made in separating these out.
Article PDF
Rights and permissions
About this article
Cite this article
Societies and Academies. Nature 133, 698–700 (1934). https://doi.org/10.1038/133698a0
Issue Date:
DOI: https://doi.org/10.1038/133698a0