the Compañía Telefónica Nacional de España and served as a member of the Spanish National Research Council. In 1942 he created the Spanish Instituto Nacional de Técnica Aeroespacial / INTA (National Institute of the Aerospace Technology), that after Terrade's death received his name. As INTA chairman, Terrades maintained along the late forties a sustained and fruitful professional relationship with Theodore von Karman. Works In (1910) he published "Discrete elements of matter and radiation", "Corrientes marinas" (1941) and, to gain entry to the Royal Academy of the Spanish Language, the volume "Neologismos, arcanismos in plàtica de ingenieros" (1946). As an encyclopedist, he authored several articles in the Espasa Encyclopedia, including those on Celestial Mechanics, the Moon and relativity. References Roca Rosell, Antoni (1990) Esteban Terrades (1883-1950) : ciencia y técnica en la España contemporánea; with Antoni Roca Rosell, José Manuel Sánchez Ron, and introduction by Enric Trillas, Barcelona : Serbal : INTA 358 pages. Esteban Terrades (1943) Lecciones sobre Física de materiales sólidos INTA. Eduardo L. Ortiz, Antoni Roca I Rosell, and Jose M. Sachez Ron (1989) "Ciencia y téchnica en Argentina y España (1941 – 1949) a través de la correspondencia de Julio Rey Pastor y Esteban Terradas", Llull: revista de la Sociedad Espanola de Historia de las Ciencias y de las Tecnicas 12(22): 33–150. This article draws on material in the corresponding article in the Catalan language Wikipedia. It may also draw on the following websites, none of which are in English. Esteban Terrades, A life given to science and technology Esteban Terrades science in the XX century Spain Instituto Nacional de Técnica Aeroespacial Esteban Terradas Electricity in Catalonia, a history to be written Científicos y Técnicos External links Esteban Terrades at the American Institute of Physics Spanish physicists 19th-century Spanish mathematicians 20th-century Spanish mathematicians Members of the Royal Spanish Academy Scientists from Barcelona Engineers from Catalonia 1852 births 1950 deaths Spanish civil engineers Instituto Nacional de Técnica Aeroespacial