Bubble

A Bubble may take the form of:

• a pocket of air or gas caught within a solid or liquid
• a spherical liquid film (often of surfactant, occasionally of bubble gum) filled with air or gas
• a metaphor for isolation (e.g. 'living in a bubble')
• a (normally) transparent dome

To blow the best surfactant bubble, first mix the perfect surfactant solution:

1 part of washing-up detergent
2 parts of glycerine
3 parts of water

See also: soap bubble, bubble (economics), antibubble, Westminster Bubble