What type of lighting is produced by a glowing heated filament?

The type of lighting produced by a glowing heated filament is incandescent lighting. This method relies on the principle of incandescence, where a filament, typically made of tungsten, is heated to a high temperature until it glows and emits light. When electric current passes through the filament, it encounters resistance, generating heat that eventually leads to light production.

Incandescent lighting is characterized by its warm, yellowish glow and is often favored for its ability to render colors accurately in comparison to other light sources. It has historically been one of the most common forms of artificial lighting, particularly in residential settings.

In contrast, fluorescent lighting works by exciting gas within a tube to produce light; LED lighting utilizes semiconductor technology; and halogen lighting involves a different type of bulb that contains halogen gas to increase efficiency and brightness. Each of these alternatives operates on different principles, which distinguishes them from incandescent lighting.