List of Famous people who died in 1990

George de Mestral was a Swiss electrical engineer who invented the hook and loop fastener which he named Velcro.

Mary Shaw Shorb, a research scientist, was best known for the development of a bacteriological assay procedure for the chemical compound now known as Vitamin B12.

Gottfried Wilhelm Flügge was a German engineer, and Professor of Applied Mechanics at Stanford University. He is known as recipient of the 1970 Theodore von Karman Medal in Engineering Mechanics, and the 1970 Worcester Reed Warner Medal.

Pavel Alekseyevich Cherenkov was a Soviet physicist who shared the Nobel Prize in physics in 1958 with Ilya Frank and Igor Tamm for the discovery of Cherenkov radiation, made in 1934.

Léon Charles Prudent Van Hove was a Belgian physicist and a Director General of CERN. He developed a scientific career spanning mathematics, solid state physics, elementary particle and nuclear physics to cosmology.

Graham Anderson Martin was an American diplomat. He was the ambassador to Thailand and as U.S. representative to SEATO from 1963 to 1967, ambassador to Italy from 1969 to 1973 and the last United States Ambassador to South Vietnam from 1973 until his evacuation during the Fall of Saigon in 1975.

Georgy Nikolayevich Flyorov was a Soviet nuclear physicist who is known for his discovery of spontaneous fission and his contribution towards the physics of thermal reactions. In addition, he is also known for his letter directed to Joseph Stalin, during the midst of World War II, to start the atomic bomb project in the Soviet Union.

Bernard D.H. Tellegen was a Dutch electrical engineer and inventor of the pentode and the gyrator. He is also known for a theorem in circuit theory, Tellegen's theorem.

Res Jost was a Swiss theoretical physicist, who worked mainly in constructive quantum field theory.