Solar Eclipses and the Ionosphere: A NATO Advanced Studies Institute held in Lagonissi, Greece, May 26-June 4, 1969

Theoretical Aspects.- Ionospheric Effects in Solar Eclipses.- Theoretical Aspects of Solar Eclipses.- The Earth's Exospheric Plasma with Some Comments on Eclipses as a Means of Studying the Ionosphere.- D-Region Chemistry.- The Chemistry of the D-Region.- Mesures d'ozone pendant les eclipses solaires.- Direct Rocket Measurements of the Ionosphere during the Solar Eclipse of November 12, 1966.- Solar Radiation and Layer Theory.- Observations of Solar Ionizing Radiations and Their Significance for the Eclipse-Ionosphere.- X-Ray Emissions from the Sun.- Radio-Astronomical Observations.- Microwave Spectral Observations of Coronal Condensations.- A Survey of Solar Eclipse Measurements in the 1-30 mm Range.- Distribution of X-Ray Emission from the Sun Deduced from Measurements of Ionospheric Absorption.- Eclipse Studies by Rocket, Satellite, and Partial Reflection Techniques.- D-Region Electron Density Measurements during the Solar Eclipse of May 20, 1966.- Partial Reflection Measurements on the D-Region during the May 20, 1966 Solar Eclipse.- Electron Content Measurements by Beacon S-66 Satellite during the May 20, 1966 Solar Eclipse.- Ionospheric Eclipse Effects.- Recent Ionospheric E and F Region Measurements during Solar Eclipses, and Their Interpretation.- The Annular Solar Eclipse on May 20, 1966 and the Ionosphere.- L'Eclipse de Soleil du 20 Mai 1966.- Quelques Résultats Préliminaires d'Observations Ionosphériques lors de l'Eclipse du Mai 20 1966...- Changes in the Topside Ionosphere during Solar Eclipses.- Concluding Remarks.- Concluding Remarks.- Concluding Statement.