What type of lighting is produced by a tubular electric discharge lamp?

The type of lighting produced by a tubular electric discharge lamp is fluorescent lighting. This is because tubular lamps, often referred to as fluorescent lamps, utilize the principle of gas discharge to produce light. In these lamps, an electric current passes through a gas, typically mercury vapor, which emits ultraviolet light. This ultraviolet light then excites a phosphor coating on the interior of the lamp, causing it to glow and produce visible light. This mechanism allows fluorescent lamps to be energy-efficient and to emit a bright light that is ideal for various applications.

In contrast, incandescent lighting is produced by heating a filament until it glows, which is fundamentally different from the gas discharge process of fluorescent lamps. LED lighting is generated through the electroluminescence of semiconductors, and halogen lighting involves the use of halogen gas to increase the efficiency of incandescent lights. Each of these other types of lighting operates on different principles and does not involve the gas discharge method characteristic of fluorescent lamps.