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  2. Ondes Martenot - Wikipedia

    en.wikipedia.org/wiki/Ondes_Martenot

    The ondes Martenot is unique among electronic musical instruments in its methods of control. [10] The ondes Martenot can be played with a metal ring worn on the right index finger. Sliding the ring along a wire produces "theremin-like" tones, generated by oscillator circuits using vacuum tubes , [ 2 ] or transistors in the seventh model.

  3. History of science and technology in Africa - Wikipedia

    en.wikipedia.org/wiki/History_of_science_and...

    The Great Rift Valley of Africa provides critical evidence for the evolution of early hominins.The earliest tools in the world can be found there as well: An unidentified hominin, possibly Australopithecus afarensis or Kenyanthropus platyops, created stone tools dating to 3.3 million years ago at Lomekwi in the Turkana Basin, eastern Africa.

  4. Electronic musical instrument - Wikipedia

    en.wikipedia.org/wiki/Electronic_musical_instrument

    Robert Moog, inventor of the Moog synthesizer. An electronic musical instrument or electrophone is a musical instrument that produces sound using electronic circuitry.Such an instrument sounds by outputting an electrical, electronic or digital audio signal that ultimately is plugged into a power amplifier which drives a loudspeaker, creating the sound heard by the performer and listener.

  5. Timeline of electrical and electronic engineering - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_electrical_and...

    RCA Electronic Music is the first synthesizer prior to the creation of artificial electronic sounds. 1952 Reintroduction of regular television broadcasts in Germany after the Second World War. 20th Century Fox developed with "Cinemascope" the most successful wide-screen process to better compete with television. Only some 50 years later pulls ...

  6. History of coronavirus - Wikipedia

    en.wikipedia.org/wiki/History_of_coronavirus

    The history of coronaviruses is an account of the discovery of the diseases caused by coronaviruses and the diseases they cause. It starts with the first report of a new type of upper-respiratory tract disease among chickens in the U.S. state of North Dakota, in 1931.

  7. Electronic music - Wikipedia

    en.wikipedia.org/wiki/Electronic_music

    Electronic music broadly is a group of music genres that employ electronic musical instruments, circuitry-based music technology and software, or general-purpose electronics (such as personal computers) in its creation. It includes both music made using electronic and electromechanical means (electroacoustic music).

  8. History of technology - Wikipedia

    en.wikipedia.org/wiki/History_of_technology

    White introduced the formula P=E/T, where P is the development index, E is a measure of energy consumed, and T is the measure of the efficiency of technical factors using the energy. In his own words, "culture evolves as the amount of energy harnessed per capita per year is increased, or as the efficiency of the instrumental means of putting ...

  9. Music technology (electric) - Wikipedia

    en.wikipedia.org/wiki/Music_technology_(electric)

    Digital electronic stage pianos have largely replaced most of the original electro-mechanical instruments in the 2000s, due to the small size, low weight and versatility of digital instruments, which can produce a huge range of tones besides piano tones (e.g., emulations of Hammond organ sounds, synthesizer sounds, etc.). However, some ...