Harry Nyquist

Harry Theodor Nyquist was a Swedish-American physicist and electronic engineer. He was born on February 7, 1889, and passed away on April 4, 1976.

Nyquist made important contributions to communication theory. His work helped shape how we send and receive information today.

His ideas laid the foundation for understanding signals in electrical systems. One of his most famous ideas is the Nyquist theorem. This theorem explains the limits of how accurately a signal can be represented when it is sampled or measured. It is important for many modern technologies, like music recording, television, and internet communications.

Because of his valuable discoveries, Nyquist’s research continues to influence engineers and scientists. His legacy helps us create better and faster ways to share information.

Personal life

Harry Nyquist was born in a small village called Nilsby, in Sweden. His parents were Lars Jonsson Nyqvist and Catarina Eriksdotter, and they had eight children. In 1907, Harry moved to the United States.

Education

Harry Nyquist started his studies at the University of North Dakota in 1912. He got a B.S. and an M.S. in electrical engineering in 1914 and 1915. Later, he finished a Ph.D. in physics at Yale University in 1917.

Career

Harry Nyquist worked at AT&T from 1917 to 1934. When AT&T's research department became the Bell Telephone Laboratories in 1934, he kept working there until he retired in 1954.

Nyquist got many awards for his important work. In 1960, he received the IRE Medal of Honor for his studies on heat-related noise, sending information, and systems that help control machines. Later that year, he was given the Stuart Ballantine Medal from the Franklin Institute for his ideas in communication systems. In 1969, he got the National Academy of Engineering's Founder's Medal for his work in engineering. In 1975, he and Hendrik Bode shared the Rufus Oldenburger Medal from the American Society of Mechanical Engineers.

After retiring, Nyquist lived in Pharr, Texas. He passed away in Harlingen, Texas on April 4, 1976.

Technical contributions

Harry Nyquist worked at Bell Laboratories and made many important discoveries. He studied things like heat noise in wires and how to make machines that can copy images. He also worked with Herbert E. Ives to create the first machines that could send pictures over distance in 1924.

Nyquist wrote an important paper in 1932 about how to make sure machines that control other machines stay stable. His ideas helped later scientists like Claude Shannon develop ways to send and store information. He discovered that the speed at which information can be sent depends on the range of frequencies used, which helped create better ways to send telegraph messages and other signals.

Terms named for Harry Nyquist

Harry Nyquist helped create important ideas in science and technology. Some concepts are named after him. They include the Nyquist rate, which tells us how often to measure a signal. There is also the Nyquist frequency, the Nyquist filter, the Nyquist plot, the Nyquist ISI criterion, a programming language called Nyquist (programming language), and the Nyquist stability criterion.