Photosphere but more tenuous corona. Other "surface features" on the photosphere are solar flares and sunspots. Photosphere The photosphere is a star's outer shell from which light is radiated. The term itself is derived from Ancient Greek roots, φῶς, φωτός/"phos, photos" meaning "light" and σφαῖρα/"sphaira" meaning "sphere", in reference to it being a spherical surface that is perceived to emit light. It extends into a star's surface until the plasma becomes opaque, equivalent to an optical depth of approximately 2/3, or equivalently, a depth from which 50% of light will escape without being scattered. In other words, a photosphere is the
What Is to Be Done? (novel) The "Dame in mourning" appearing at the end of the novel is Olga S. Chernyshevskaya, the author's wife. Characters with the last name "Kirsanov" also appear in Ivan Turgenev's "Fathers and Sons". Dostoyevsky argues with Chernyshevsky's ideas in "Notes from Underground". In particular, he responds negatively to Chernyshevsky's idealization of The Crystal Palace, a theme which is referenced throughout Russian literature. American playwright Tony Kushner referenced the book multiple times in his play "Slavs!". The main character of Gide's "Les caves du Vatican" (En. "Lafcadio's Adventures"), Lafcadio, resembles Rakhmetov. In the book "", author Chris Matthew Sciabarra claims that "What