Abstract
EMPLOYMENT OF SELENIUM CELLS DURING TOTAL SOLAR ECLIPSE—During the total eclipse of August last, the observers at Tortosa made use of selenium cells for the double purpose of determining the variation in sunlight during the progress of the eclipse, and of ascertaining the exact moments of the beginning and end of totality.
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Our Astronomical Column . Nature 73, 617–618 (1906). https://doi.org/10.1038/073617a0
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DOI: https://doi.org/10.1038/073617a0