Which of the following is NOT a type of electric light?

Natural light refers to illumination that comes from natural sources, primarily sunlight, rather than artificial lighting created by electrical systems. It is the type of light that is not artificially produced and exists naturally in the environment.

In contrast, incandescent, halogen, and fluorescent lights are all types of electric lights created through different technological processes that involve electricity. Incandescent lights work by heating a filament until it glows, halogen lights are a form of incandescent lighting that uses halogen gas to extend the lifespan and efficiency, and fluorescent lights use gas and a phosphor coating to produce light when an electric current passes through.

Understanding the distinction between natural and electric light is essential in the field of interior design, as it influences decisions related to the functionality, ambiance, and energy efficiency of design spaces.