In color theory, a purple is defined as any non-spectral color between violet and red (excluding violet and red themselves). The spectral colors violet and indigo are not purples according to color theory but they are purples according to common English usage since they are between red and blue.
Dry ice fog is a thick, dense, low-lying fog created exactly the way fog in nature is. created, by condensing water vapor out of the atmosphere. We use dry ice (the. solid form of carbon dioxide) to condense the water vapor out of the air. Dry ice. fog contains no chemicals, glycols, or oils, and is truly a water based fog.
How to Use Dry Ice. Three Methods:Handling Dry IceUsing Dry Ice for Fog EffectsUsing Dry Ice for Freezing BerriesCommunity Q&A. You may be familiar with dry ice used for fog effects during Halloween, or perhaps for use keeping summer drinks cold in the summer season. Dry ice has many applications and is especially handy should your freezer break down.