Photosphere 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 deepest region of a luminous object, usually a star, that is transparent to photons of
Sora (Korean given name) Sora (Korean given name) So-ra is a Korean feminine given name. Unlike most Korean given names, which are composed of two single-syllable Sino-Korean morphemes each written with one hanja, So-ra is an indigenous Korean name, a single two-syllable word meaning "conch shell". It is one of a number of such native names (called 고유어 이름) that have become more popular in South Korea in recent decades. In some cases, however, parents also choose to register hanja to represent the name, picking them solely for their pronunciation (for example, , with hanja meaning "sunlight" and "net", respectively). There are 45 hanja