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
Brandon (given name) Brandon (given name) Brandon is a masculine given name which originates from two or possibly three separate sources, two Celtic, the other, Anglo-Saxon, and has historically been used by these different cultures independently. Today, most people with the name do not have any connection or lineage with any of these sources and use them as if they were the same name. In the instances of the Celtic origins, it is either a variant of the Irish masculine given name, Breandán, or descended from the Old Welsh name Brân, meaning "crow". The Anglo-Saxon origin is the surname "Brandon". The given name