- The George R. Moscone Convention Center (pronounced /mɒsˈkoʊni/), popularly known as the Moscone Center, is the largest convention and exhibition complex in San Francisco, California. The complex consists of three main halls spread out across three blocks and 87 acres (35 ha) in the South of Market neighborhood. The convention center originally opened in 1981. It is named after San Francisco former mayor George Moscone, who was assassinated in November 1978.
- Gabriel’s horn (Wikipedia)
A Gabriel’s horn (also called Torricelli’s trumpet) is a type of geometric figure that has infinite surface area but finite volume. The name refers to the Christian tradition where the archangel Gabriel blows the horn to announce Judgment Day. The properties of this figure were first studied by Italian physicist and mathematician Evangelista Torricelli in the 17th century.
