A vacuum airship, also known as a vacuum balloon, is a hypothetical airship that is evacuated rather than filled with a lighter than air gas such as hydrogen or helium. First proposed by Italian monk Francesco Lana de Terzi in 1670, the vacuum balloon would be the ultimate expression of displacement lift power.
Read more about Vacuum Airship: Principle, Arthur De Bausset
Famous quotes containing the word vacuum:
“Teenagers who are never required to vacuum are living in one.”
—Fred G. Gosman (20th century)