Constantin Dmitrovich Perskyi (Константин Дмитриевич Перский) (2 June 1854 – 5 April 1906) was a Russian scientist who is credited with coining the word television (télévision) in a paper that he presented in French at the 1st International Congress of Electricity, which ran from 18 to 25 August 1900 during the International World Fair in Paris. At the time, he was Professor of Electricity at the Artillery Academy of Saint Petersburg. His paper referred to the work of other experimenters in the field, including Nipkow and Bachmetiev (Порфирий Иванович Бахметьев), who were attempting to use the photoelectric properties of selenium as the basis for their research in the field of image transmission.
Constantin Perskyi, "Television by means of electricity", from the International World Fair of 1900, International Congress of Electricity (Paris, 18–25 August 1900), reported under the authority of Mr. E. Hospitalier, General Reporter, Gauthier-Villars, printer and publisher, Paris, 1901. (French) text