Word: coronas
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Dates: during 1920-1929
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...Harvard Observatory tomorrow is maintaining four official observation stations along the path of totality, from which they will attempt to measure photographically the light of the corona. The efforts to determine the facts has led the Harvard observers to request amateurs to station themselves along the northern border of the path of totality, which extends approximately from Cotuit, directly through Providence, to Stafford, Connecticut, in order to determine the exact line along which the shadow of the eclipse ceases to be total...
...Observatory has already stationed several observers along the path of totality. These will attempt to measure photographically the light of the corona, which special problem has been delegated to the University...
Professor Shapley and his associates are devoting their particular attention to the problem of the corona, which consists of rays of light appearing around the edge of the moon when it completely covers the sun. What it is made up of is still a mystery to the world and it is hoped that Professor Shapley's observations may shed some light on the subject. His lecture, which is open to the public, is given under the auspices of the Harvard chapter of the Gamma Alpha Scientific Society...
...period of totality will vary from only a few seconds to about two minutes in the favored points near the centre of the belt. During this brief period will be visible the rare sight of the sun's corona, ejections of gas driven out some millions of miles from the sun's seething fireball. This corona casts a ghostly light and exhibits itself around the dark rim of the moon, a glow from the sun at the inner ring, radiating outward in soft tints like a halo. Meanwhile, the sky is darkened and the stars are visible. Near the moon...
...Scientific View. Meticulous obsenations will be made on many aspects of the phenomena accompanying the sun's eclipse. In many cases, the observations will cover a period extending a month before and a month after the event. One of the chief things to be studied is the sun's corona. Because it is visible only during the brief periods of total eclipses, there has probably been only about an hour made up of scattered minutes here and there, now and then, during which the corona has been under scientific examination. It is known to be connected with the phenomena...