The Total Solar Eclipse of September 21, 1941


ALTHOUGH the achievements of Dr. B. Lyot in photographing the corona without an eclipse1 have provided an alternative method for certain spectroscopic work on the inner corona, a total solar eclipse still provides the only opportunity for observation of the outer corona, and for many other important researches such as, for example, the observational determination of the deflexion of light by the mass of the sun. The total time available for observation during totality is only a few hours a century, so that literally every second is of prime importance. That the tracks of totality may pass across the earth's surface in a band 60–100 miles wide without crossing land, or be confined solely to polar regions, together with the ever–present chance of cloud, acts merely as a greater inducement to make the fullest use of every opportunity. It is thus particularly unfortunate that the shadow of war is likely to obscure the shadow of the moon on September 21.

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  1. 1

    Mon. Nat. Roy. Astrol Soc., 99, 580.

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SADLER, D. The Total Solar Eclipse of September 21, 1941. Nature 148, 308 (1941).

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