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The Hungarian engineer Dénes Mihály patented an image scanning with line deflection, in which each point of an image is scanned ten times per second by a selenium cell. August Karolus (1893–1972) invents the Kerr cell, an almost inertia-free conversion of electrical pulses into light signals. He was granted a patent for his method of ...
1947 – Invention of the First Transistor at Bell Telephone Laboratories, Inc. 1947 – Invention of Holography; 1948 – Birth of the Barcode; 1948 – The Discovery of the Principle of Self-Complementarity in Antennas and the Mushiake Relationship; 1948 – First Atomic Clock; 1948–1951 – Manchester University "Baby" Computer and its ...
Some of the devices which would enable wireless telegraphy were invented before 1900. These include the spark-gap transmitter and the coherer with early demonstrations and published findings by David Edward Hughes (1880) [9] and Heinrich Rudolf Hertz (1887 to 1890) [10] and further additions to the field by Édouard Branly, Nikola Tesla, Oliver Lodge, Jagadish Chandra Bose, and Ferdinand Braun.
Engineering advances in the 1880s, including the invention of the transformer, led to electric utilities starting to adopting alternating current, up until then used primarily in arc lighting systems, as a distribution standard for outdoor and indoor lighting (eventually replacing direct current for such purposes).
Tesla is recognized as one of the foremost electrical researchers and inventors. [3] At the time of publication, the book was the "bible" of every electrical engineer practicing the profession. [4] [5] The book contains Forty-three chapters, most of them on different areas of Tesla's research and inventions by Tesla. The first chapter is a ...
Timeline of telescopes, observatories, and observing technology; Timeline of temperature and pressure measurement technology; Timeline of cultivation and domestication in South and West Asia; Timeline of global surveillance disclosures (2013–present) Timeline of online video; Timeline of the introduction of color television in countries and ...
At the beginning, most content was related to electrical, electronics and computer engineering. As the fields of civil engineering, mining, metallurgical and petroleum engineering, chemical engineering and mechanical engineering are covered by members of the respective organizations now, ETHW is becoming a global record for preserving knowledge ...
Print/export Download as PDF ... Pages in category "History of electrical engineering" ... Timeline of electrical and electronic engineering;