Description: The octopus is a mollusk in the class Cephalopoda. Cephalopoda means âhead footâ in Greek, and in this class of organisms the head and foot are merged. A ring of eight equally-long arms surround the head. The arms are covered on the underside with suction cups that are very sensitive to touch and taste.
Light fixture. A light fixture (US English), light fitting (UK English), or luminaire is an electrical device used to create artificial light by use of an electric lamp. All light fixtures have a fixture body and a light socket to hold the lamp and allow for its replacement.
Components of a luminaire, such as reflectors and diffusers, absorb some of the light from the lamps(s). A highly efficient luminaire emits most of the light that the lamp(s) emits. Lux (LX) - The metric unit of measure for illuminance of a surface. One lux is equal to one lumen per square meter.