Lamps - Incandescents, NeonsIncandescent and neon lamps are types of light sources that produce light by heating a metal or gas to a high temperature. Incandescent lamps, which are the most common type of light bulb, produce light by passing an electric current through a wire filament, which heats up and produces light. Neon lamps, on the other hand, produce light by passing an electric current through a gas-filled tube, which causes the gas to produce a glowing discharge. Incandescent and neon lamps are commonly used in a wide range of applications, including lighting, signage, and instrumentation. They are often preferred over other types of light sources because they are relatively inexpensive and easy to use. However, they are also less energy efficient than other types of light sources, such as LED lamps.