Definition of photosphere in English:

Share this entry


Pronunciation: /ˈfəʊtəsfɪə/


The luminous envelope of a star from which its light and heat radiate.
Example sentences
  • The trip from the radiation zone to the photosphere - the yellowish-white sphere of light that we see - takes about one week.
  • The rotated elliptical shell could explain the polarization angle, but failed to match a feature in the supernova's flux that suggested an uneven absorption of light from the photosphere.
  • Observing the solar photosphere in white light is traditionally carried out with neutral density filters.



Pronunciation: /fəʊtəˈsfɛrɪk/
Example sentences
  • We can, however, extrapolate the photospheric magnetic field into the corona.
  • We investigate the dynamics of and the relations between small-scale penumbral and photospheric features near the outer penumbral boundary.

For editors and proofreaders

Line breaks: photo|sphere

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.