For dream sequences on the stage or in movies what chemical is used to create cloud like dust ?

Answer 1

They use dry ice. If you want to use it:

* Wear gloves, or it will give you cold burns
* Crush it up to a powder (with a hammer)--big chunks don't create much "smoke," and put it into warm water
* Use a fan on a light setting or someone waving a large piece of cardboard off-camera/stage to blow it around
* Go to a local supermarket. They ship frozen foods in dry ice, and will probably give it to you for free, especially if you tell them it's for a school project

And what people said above is true; dry ice sublimates (turns directly from solid to gas) and since the gas is really cold, it condenses water from the atmosphere (just like fog). So basically the humidity of the atmosphere is the biggest determinant. If you're in Arizona on a dry day even large amounts of dry ice won't make that much fog.

Answer 2

"Dry ice" or carbon dioxide chilled to a solid state. The reason it is used is that CO2 passes from solid to gas immediately, without going thru a liquid state like water does. This makes it easier, as it doesn't leave a mess. The "fog" is the evaporation or condensation of the gas because of the temperature change from cold to warm.

Answer 3

Dry ice (solid CO2) can be used, however the "smoke" comes mostly from condensing water vapor in the air. If it is in a very dry environment there will be very little "smoke" unless you also add a humidifier to add more water vapor to the air.

Answer 4

The fog like mist or "daut" can be created with dry Ice. I do not know the chemical formula for it.

Answer 5

Dry ice in water, yields CO2 gas cloud....be careful, dry ice burns skin!

Answer 6

They can use dry ice, smoke bomb, and/or a special effect lens on the camera or conbine them all or any two.