Word: corona
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...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...
...When the moon completely covers the sun, at the height of the eclipse" he said, "there will still be rays shooting out around the edges of the moon, which are called the corona. The corona has approximately the same total light as that of the full moon. It is made up probably of great tongues of flame which shoot thousands of miles out into space, and are reflected by something in the air, the nature of which has not yet been determined...
...problem is to study the total brightness of the corona. For this purpose we have four photometer, cameras, consisting of a box with a plate at one end and a pinhole at the other...
...last total eclipse occurred in Massachusetts over 100 years ago. In 1806 Nathaniel Bowditch, a prominent Massachusetts citizen of that day, observed a total eclipse from Salem, and remarked especially on the corona, though he did not call it by that name...