User:Stepan Slamak/sandbox

Howard David Flack (28 August 1943 – 2 February 2017) was a British crystallographer known in particular for his work on chirality and for introducing the Flack parameter, a factor used to estimate the absolute configuration of a structural model determined by single-crystal structure analysis. He was a pioneer both in the application of information technology to crystallography and in the development of electronic publishing.

Personal life
Howard Flack married Evelyne Arn and moved permanently to Geneva in 1972. Although he spent the rest of his life in Switzerland and became a fluent speaker of French, he remained a British citizen.

Death
Howard Flack died on 2 February 2017, aged 73, from acute pneumonia contracted during treatment for recently diagnosed pleural mesothelioma.