An atmospheric effect
, where the particles produced evenly distribute throughout the venue
, with no discernible clouds or concentrations. Most often used (extensively in Rock 'n' Roll
) to produce better visibilities of the light beams.
The "old school" method of producing haze was to use a heater coil to burn a powder, sal ammoniac, to release
particles in the air. Today, mineral oil or glycerin hazers such as the ReelEFX DF-50
, Le Maitre Radiance
, and many others, are used.
In this standards document, ANSI E1.23 - 2006 Entertainment Technology - Design and Execution of Theatrical Fog Effects
defines the terms thusly:
: A mixture of liquid droplets in air that reduces visibility and reflects light.
: An accumulation in the atmosphere of very fine, widely dispersed, solid or liquid particles
giving the air an opalescent appearance.
See also smoke