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
Aodh (given name) (given name)). Pet forms of the name formed with the diminutive "-án" include Aodhán and Ádhán (Old Irish "Aedán"), names which are sometimes anglicized as Aidan, Aiden, and Edan. A double diminutive is Aodhagán and its modern form Aogán. Maodhóg (Old Irish "Máedóc"), anglicized Mogue, and the Welsh form Madog are formed from the affectionate prefix "mo-" and the separate diminutive "-og". It was also used in Roman Britain as a native form of the Latin Dominus. All of these variants are or . The spelling "Aogán" reflects the loss of the light "dha" syllable, pronounced , but the "o"