path of totality

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path of totality (plural paths of totality)

  1. (astronomy) The path traced on the Earth's surface by the moon's shadow (more precisely, the umbra) during a total eclipse of the sun.
    • 1993, Jacqueline Mitton, The Penguin Dictionary of Astronomy, 2nd edition (paperback), Penguin Books, →ISBN, page 127:
      Over a wider region either side of the path of totality, a partial eclipse is seen.
    • 1994, Joel Harris, Richard Talcott, Chasing the Shadow, Kalmbach Books, →ISBN, page 79:
      Keep the filter on the camera for all the exposures unless you’re in the path of totality.
    • 1999, Peter Coles, Einstein and the Total Eclipse, Totem Books, →ISBN, page 11:
      The path of totality can extend for many thousands of miles, and the duration of totality in any one place can be as long as about seven minutes.