March 4, 1929

1929Bernard Haitink, Dutch violinist and conductor (died 2021)^[†]

Bernard Johan Herman Haitink was a Dutch conductor and violinist. He was the principal conductor of several international orchestras, beginning with the Royal Concertgebouw Orchestra in 1961. He moved to London, as principal conductor of the London Philharmonic Orchestra from 1967 to 1979, music director at Glyndebourne Opera from 1978 to 1988 and of the Royal Opera House from 1987 to 2002, when he became principal conductor of the Staatskapelle Dresden. Finally, he was principal conductor of the Chicago Symphony Orchestra from 2006 to 2010. The focus of his prolific recording was classical symphonies and orchestral works, but he also conducted operas. He conducted 90 concerts at The Proms in London, the last on 3 September 2019 with the Vienna Philharmonic. His awards include Grammy Awards and the 2015 Gramophone Award for his lifetime achievements.

1929Peter Swerling, American theoretician and engineer (died 2000)^[†]

Peter Swerling was one of the most influential radar theoreticians in the second half of the 20th century. He is best known for the class of statistically "fluctuating target" scattering models he developed at the RAND Corporation in the early 1950s to characterize the performance of pulsed radar systems, referred to as Swerling Targets I, II, III, and IV in the literature of radar. Swerling also contributed to the optimal estimation of orbits of satellites and trajectories of missiles, anticipating the development of the Kalman filter. He also founded two companies, one of which continues his engineering work today.