The Secret of Flight - Season 1 Episode 11
Watch TV Shows The Secret of Flight HD Defines a vortex and explains its structure. Shows several types of vortex including the ring, tip and thermal vortex. Uses the smoke box, water tank, and motion pictures of tornadoes to illustrate how a vortex behaves.
- Year: 1959
- Country: United States of America
- Genre: Documentary
- Studio: PBS
- Director: Sam Becker
- Cast: Alexander Lippisch