Väisälä
Väisälä is a surname of Finnish origin. It is most famously associated with the Väisälä brothers, Yrjö Väisälä (1891-1971) and Vilho Väisälä (1889-1969), both prominent Finnish scientists. Yrjö Väisälä was an astronomer and physicist known for his work on celestial mechanics and his discovery of asteroids and comets. Vilho Väisälä was an inventor and meteorologist, recognized for his development of instruments for measuring atmospheric conditions, most notably the Väisälä radiosonde.
The surname Väisälä is derived from the Finnish word "väisä," which can refer to a place where