Vilho Väisälä
Vilho Väisälä (Finnish pronunciation: [ˈʋilho ˈʋæi̯sælæ]; September 28, 1889 – August 12, 1969) was a Finnish meteorologist and physicist, and founder of Vaisala Oyj. After graduation in mathematics in 1912, Väisälä worked for the Finnish Meteorological Institute in aerological measurements, specializing in the research of the higher troposphere.