Sentence Examples


  • The photosphere does not rotate in one piece, lower latitudes outrunning higher.
  • The temperature of the photosphere at this stage has reached a maximum, and the star is new of the helium type.
  • Enclosing the photosphere is a truly gaseous envelope which is called the chromosphere, and which shows a spectrum of bright lines when we can isolate its emission from that of the photosphere.
  • Hence when the photosphere is viewed through it an absorption spectrum is shown, but when it can be viewed separately a bright line spectrum appears.
  • When the slit of the spectroscope is set across a spot, it shows, as might be expected, a general reduction of brightness as we pass from the photosphere to the penumbra; and a still greater one as we pass to the umbra.
 

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