Sentence Examples

  • The notions of the penumbra and umbra are important in considering eclipses (q.v.).
  • The umbra in the former case becomes the fully illuminated portion, and vice versa.
  • Each spot shows with more or less completeness a ring-shaped penumbra enclosing a darker umbra; the umbra, which looks black beside' the photosphere, is actually about as brilliant as limelight.
  • The umbra of a spot is generally not tormented by rapid line-of-sight motions; where any motion has been found G.
  • Marcion, for example, regarded the body of Christ merely as an "umbra," a "phantasms."