Observations of the Solar Corona and Solar Wind Sources

摘要

This talk presents a historical survey of the remote sensing observations of the solar corona, and in particular of those more relevant for our understanding of the solar wind. I have chosen a schematic presentation to emphasize the steps forward which have characterized the progress of our knowledge. The matter is divided in sections, according to the tecniques emploied for the observations, and follows a chronologique sequence, although some overlap in time, between different sections, has been unaivodable. I am convinced that this organization of the matter is the one which best illustrates the development of our knowledge of the solar corona.