Mathematics – Logic
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980sci...210.1313z&link_type=abstract
Science, vol. 210, Dec. 19, 1980, p. 1313-1319.
Mathematics
Logic
3
Astronomy, Solar Eclipses, Astronomical Spectroscopy, Biological Effects, Chromosphere, Gravity Waves, Solar Corona, Solar Gravitation, Solar Prominences
Scientific paper
Earth-based observations of total eclipses of the sun are discussed, with particular attention given to those made during the eclipse of February 16, 1980 in the south of India. The history of eclipse observations is reviewed, with consideration of the discovery of the interval of 18 years, 11 1/3 days between eclipses, interest in the visible corona, spectroscopic investigations of the corona, prominences and chromosphere and jet aircraft observations made to prolong the time of totality. Experiments conducted at the Japal-Rangapur Astrophysical Observatory and other locations along the path of totality in India concerning the deflection of starlight by the solar gravitational field, coronal structure, temperature and dynamics, the solar diameter, interplanetary dust, gravity waves in the ionosphere, and the biological effects of the eclipse on humans and animals are discussed. It is noted that the next eclipses with reasonable chances for good observing conditions will be in July 1981 in the Soviet Union and China, June 1983 in Sumatra and November 1984 in New Guinea.
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