The term 'Lamp Necessity' refers to a light BULB, which is an essential component of any lamp. A light BULB is an electrical device that produces light when electricity passes through it. It consists of a glass enclosure filled with a gas, usually argon or nitrogen, and a filament made of tungsten wire. The filament is heated to a high temperature by the electric current, causing it to emit visible light. Light bulbs are used in many applications, from lighting up homes and businesses to providing illumination for medical procedures.