Which part of a lamp refers specifically to the light source?

The light bulb is the part of a lamp that refers specifically to the light source. It is the component that produces illumination when electrical current passes through it. Light bulbs come in various types, such as incandescent, fluorescent, LED, and halogen, each providing different levels of brightness and energy efficiency. The effectiveness of a lamp in providing light depends directly on the type of light bulb used, making it essential in any lighting design.

In contrast, the shade serves more as a decorative and functional element that diffuses or directs the light produced by the bulb, while the base provides stability and support for the lamp. The fixture is a broader term that can encompass the entire assembly, including the socket, where the light bulb is installed, but it does not specifically identify the light source itself. Understanding the role of the light bulb is crucial for anyone involved in interior design, as it impacts both the aesthetic and practical aspects of a lighting scheme.