Léon Theremin Inventor

Leon theremin

Lev Sergeyevich Termen; Russian: Ле́в Серге́евич Терме́н) (27 August [O.S. 15 August] 1896 – 3 November 1993 (Léon Theremin in America) was a Russian and Soviet inventor. He is most famous for his invention of the theremin, one of the first electronic musical instruments, and the first to be mass produced. He is also the inventor of interlace, a technique of improving the picture quality of a video signal, widely used in video and television technology. His invention of "The Thing", an espionage tool, is considered a predecessor of RFID technology. Léon Theremin was born Lev Sergeyevich Termen in Saint Petersburg, Russian Empire in 1896 into a family of French and German ancestry. He had a sister named Helena. He started to be interested in electricity at the age of 7, and by 13 he was experimenting with high frequency circuits. In the seventh class of his high school before an audience of students and parents he demonstrated various optical effects using electricity. By the age of 17 he was in his last year of high school and at home he had his own laboratory for experimenting with high frequency circuits, optics and magnetic fields.

Personal details

Date of birth
August 15th, 1896
Soviet Union,United States of America
Date of death
November 3rd, 1993 at age of 97
Place of death
Moscow, Russia
Places lived
Saint Petersburg , Russia
pop. 4,879,566 (2010)





The terpsitone was an electronic musical instrument, invented by Léon Theremin, which consisted of a platform fitted with space-controlling antennae, through and around which a dancer would control the musical performance. By most accounts, the instrument was nearly impossible to control. Of the three instruments built, only the last one, made by Theremin in 1978 for Lydia Kavina, survives today. The instrument was named after the Greek muse of dance, Terpsichore.

Invention on wikipedia


The Rhythmicon—also known as the Polyrhythmophone—was the world's first electronic drum machine.

Invention on wikipedia

3.Thing Passive cavity resonator||Great Seal bug

The Thing, also known as the Great Seal bug, was one of the first covert listening devices to use passive techniques to transmit an audio signal. Because it was passive, being energized and activated by electromagnetic energy from an outside source, it is considered a predecessor of RFID technology.

Invention on wikipedia

4.Interlaced video

Interlaced video is a technique for doubling the perceived frame rate of a video display without consuming extra bandwidth. The interlaced signal contains two fields of a video frame captured at two different times. This enhances motion perception to the viewer, and reduces flicker by taking advantage of the phi phenomenon effect. This effectively doubles the time resolution as compared to non-interlaced footage. Interlaced signals require a display that is natively capable of showing the individual fields in a sequential order. Only CRT displays and ALiS plasma displays are capable of displaying interlaced signals, due to the electronic scanning and lack of apparent fixed-resolution. Interlaced scan refers to one of two common methods for "painting" a video image on an electronic display screen by scanning or displaying each line or row of pixels. This technique uses two fields to create a frame. One field contains all odd lines in the image, the other contains all even lines. A PAL-based television set display, for example, scans 50 fields every second.

Invention on wikipedia

5.Security alarm

A security alarm is a system designed to detect intrusion – unauthorized entry – into a building or area. Security alarms are used in residential, commercial, industrial, and military properties for protection against burglary or property damage, as well as personal protection against intruders. Car alarms likewise protect vehicles and their contents. Prisons also use security systems for control of inmates. Some alarm systems serve a single purpose of burglary protection; combination systems provide both fire and intrusion protection. Intrusion alarm systems may also be combined with closed-circuit television surveillance systems to automatically record the activities of intruders, and may interface to access control systems for electrically locked doors. Systems range from small, self-contained noisemakers, to complicated, multi-area systems with computer monitoring and control.

Invention on wikipedia


The theremin, is an early electronic musical instrument controlled without physical contact by the thereminist. It is named after the Westernized name of its Russian inventor, Léon Theremin, who patented the device in 1928. The instrument's controlling section usually consists of two metal antennas that sense the relative position of the thereminist's hands and control oscillators for frequency with one hand, and amplitude with the other. The electric signals from the theremin are amplified and sent to a loudspeaker. The theremin was used in movie soundtracks such as Miklós Rózsa's for Spellbound and The Lost Weekend and Bernard Herrmann's for The Day the Earth Stood Still and as the theme tune for the ITV drama Midsomer Murders. This has led to its association with a very eerie sound. Theremins are also used in concert music and in popular music genres such as rock. Psychedelic rock bands in particular, such as Hawkwind, have often used the theremin in their work.

Date of invention


Invention on wikipedia

7.Theremin cello

Personal movie appearances

Title Year Appearance type Budget Awards Producers Directors Writers
Electro Moscow
2013 Archive Footage
Dominik Spritzendorfer
Elena Dmitrieva Tikhonova
Dominik Spritzendorfer
Dominik Spritzendorfer
Elena Dmitrieva Tikhonova
Theremin: An Electronic Odyssey


Check Léon Theremin on wikipedia.

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