A hot air balloon consists of a bag called the envelope that is capable of containing heated air. Suspended beneath is a gondola or wicker basket (in some long-distance or high-altitude balloons, a capsule), which carries passengers and (usually) a source of heat, in most cases an open flame. The heated air inside the envelope makes it buoyant since it has a lower density than the relatively cold air outside the envelope.
As with all aircraft, hot air balloons cannot fly beyond the atmosphere. Unlike gas balloons, the envelope does not have to be sealed at the bottom since the air near the bottom of the envelope is at the same pressure as the air surrounding.
Hereunder are some film photos of colorful hot air balloons.
|Hot Air Balloon in Göreme, Turkey by ChihPing|
|Hot Air Balloon by Stu. B|
|Hot Air Balloon by Alexandra Davie|
|Ferrara Balloons Festival by Pretty in Mad|
|Ballonfahren by Schwedenwuerfel|
|Leica M3 (1954), Göreme, Cappadocia (Kapadokya, Turkey) B804767_N022_ID3863301_FF_P001 by tango-|
|Hot Air Balloon Victoria,BC by ayoye|
|Wide Angle View, Readington, NJ Balloon Festival 2007 by Tommy Bass|
|thinking of summer... by *Starbuck*|
|Hot Air Balloon by Michael Seamans|
|Balloons by Daz.|
|yellow, orange, red balloons by darkcanopy|