List of Famous people who died at 86

Robert Steven Ledley, professor of physiology and biophysics and professor of radiology at Georgetown University School of Medicine, pioneered the use of electronic digital computers in biology and medicine. In 1959, he wrote two influential articles in Science: "Reasoning Foundations of Medical Diagnosis" and "Digital Electronic Computers in Biomedical Science". Both articles encouraged biomedical researchers and physicians to adopt computer technology. In 1960 he established the National Biomedical Research Foundation (NBRF), a non-profit research organization dedicated to promoting the use of computers and electronic equipment in biomedical research. At the NBRF Ledley pursued several major projects: the early 1960s development of the Film Input to Digital Automatic Computer (FIDAC), which automated the analysis of chromosomes; the invention of the Automatic Computerized Transverse Axial (ACTA) whole-body CT scanner in the mid-1970s; managing the Atlas of Protein Sequence and Structure ; and the establishment of the Protein Information Resource in 1984. Ledley also served as editor of several major peer-reviewed biomedical journals. In 1990, Ledley was inducted into the National Inventors Hall of Fame. He was awarded the National Medal of Technology in 1997. He retired as president and research director of the NBRF in 2010.

Daniel Keyes was an American writer who wrote the novel Flowers for Algernon. Keyes was given the Author Emeritus honor by the Science Fiction and Fantasy Writers of America in 2000.

Richard Lewis Arnowitt was an American physicist known for his contributions to theoretical particle physics and to general relativity.

Terence Joseph Alexander was an English film and television actor, best known for his role as Charlie Hungerford in the British TV drama Bergerac, which ran for nine series on BBC One between 1981 and 1991.

István Mészáros was a Hungarian Marxist philosopher. Described as "one of the foremost political philosophers of the late twentieth and early twenty-first centuries" by Monthly Review, Mészáros wrote mainly about the possibility of a transition from capitalism to socialism. His magnum opus, Beyond Capital: Toward a Theory of Transition (1995), was concerned not only with this theme but provided a conceptual distinction between capitalism and capital, and an analysis of the current capitalist society and its "structural crisis". He was interested in the critique of the so-called "bourgeois ideology", including the idea of "there is no alternative", and he also elaborated analysis on the failures of "real socialism".

Fred Kavli was a Norwegian-American businessman and philanthropist. He was born on a small farm in Eresfjord, Norway. He founded the Kavlico Corporation, located in Moorpark, California. Under his leadership, the company became one of the world's largest suppliers of sensors for aeronautic, automotive, and industrial applications supplying General Electric and the Ford Motor Company.

Mary Wolf Wilkinson Streep was an American fine-artist and art editor. Her daughter is actress Meryl Streep.