The SBUV is capable of determining the global ozone concentration in the stratosphere to an absolute accuracy of 1 percent; the vertical distribution of atmospheric ozone to an absolute accuracy of 5 percent; the long-term solar spectral irradiance from 160 to 400 nm Photochemical process and the influence of trace constituents on the ozone layer.
22.
In the early 1960s, having become Professor of General Organic Chemistry at ETH, Eschenmoser began work on what was the most complex natural product synthesized at the time photochemical process known as the A / D variant . The work was finally published in 1973, and it marked a landmark in the history of organic chemistry.
