Nikolai Dmitrievich Papaleksi

Nikolai Dmitrievich Papaleksi ( Russian Николай Дмитриевич Папалекси ., Scientific transliteration Nikolaj Dmitrijevič Papaleksi * November 20 ^{. Jul} / 2. December  1880 ^greg. In Simferopol , Crimea, † 3. February 1947 in Moscow ) was a Soviet radio frequency engineer .

He came from a family of officers of Greek origin. His father died when he was four years old. He then lived with his mother in Poltava , where he attended high school. He then studied physics in Berlin, after a year he moved to the University of Strasbourg , where he became friends with Leonid Isaakowitsch Mandelstam and received his doctorate from Ferdinand Braun in 1904 with a paper on rapid electrical oscillations. With his further research in Strasbourg he became titular professor . In 1907 he moved to the JJ Thomson laboratory in Cambridge.

In 1914 he returned to Russia and in the following year he set up the radio telegraphic line from Petrograd to Tsarskoye Selo, just under 30 km south .

From 1918 to 1922 he taught at the Polytechnic Institute in Odessa and then moved to the Central Radio Laboratory in Nizhny Novgorod , where he played a leading role in the development and establishment of a state-owned electron tube production facility until 1935. With his tubes he carried out wired and wireless telephony experiments. He also developed an interference method to measure the distribution of radio waves on the earth's surface. From 1930 he worked on the radio location.

He and Mandelstam together published over 20 writings and received over 30 patents. Papaleksi received the Stalin Prize in 1942 and the Order of Lenin in 1945 . The lunar crater Papaleksi is named after him.

Works

• Sobranie trudov ; Akademija Nauk SSSR; 1948