Ground foggers, also known as dry foggers, produce a thick, low-hanging fog effect by using chilled or heated water vapor, often combined with a fog fluid. These devices create a visually dramatic atmosphere, obscuring the stage floor while leaving the air above relatively clear. A common example of their use is in theatrical productions to create an ethereal or mysterious ambiance.
The ability to generate dense, ground-hugging fog offers significant advantages in various applications. In entertainment, it enhances stage productions, concerts, and themed events by adding depth and visual interest. Beyond the arts, these devices find practical uses in industrial settings for leak detection and airflow visualization. The development of these specialized fog-producing machines arose from a growing demand for more controllable and impactful atmospheric effects, moving beyond simpler smoke or haze machines. Their ability to precisely control the fog density and dispersion has made them invaluable tools for creating specific moods and illusions.