Mihajlo Idvorski Pupin, Ph.D, LL.D. (4 October 1858 12 March 1935; Serbian Cyrillic: Михајло Идворски Пупин), also known as Michael I. Pupin, was a Serbian physicist and physical chemist. Pupin is best known for his numerous patents, including a means of greatly extending the range of long-distance telephone communication by placing loading coils (of wire) at predetermined intervals along the transmitting wire (known as "pupinization")Honors and tributesPupin was president of the Institute of Radio Engineers in 1917 and the American Institute of Electrical Engineers (AIEE) in 1925-1926. Pupin was president of the American Association for the Advancement of Science (AAAS), the New York Academy of Sciences, member of the French Academy of Science, and the Serbian Academy of Science.In 1920, he received AIEE's Edison Medal For his work in mathematical physics and its application to the electric transmission of intelligence. Columbia University's Pupin Hall, the site of Pupin Physics Laboratories, is a building completed in 1927 and named after him in 1935. A small crater on the Moon was named in his honor. The Mihajlo Pupin Institute, an engineering and technological research institution, was founded in 1946 in Belgrade.