A device designed for creating soap bubbles filled with a dense, white fog is achieved using solid carbon dioxide. This fog, heavier than air, causes the bubbles to sink and linger near the ground, creating a dramatic visual effect. A typical unit consists of a container for water and soap solution, a mechanism for generating bubbles, and a chamber for the solid carbon dioxide. The solid carbon dioxide sublimates (transitions directly from solid to gas) in the water, creating the fog that fills the generated bubbles.
These devices are popular for creating captivating visual displays at events, parties, and theatrical productions. The unique properties of the fog-filled bubbles, including their density and visual appeal, make them a compelling addition to various settings. Historically, the use of solid carbon dioxide for entertainment purposes has evolved from simpler demonstrations to more sophisticated applications, reflecting advances in both technology and artistic expression.