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Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian electrical engineer and inventor who received hundreds of patents in fields related to radio and sonar between 1891 and 1936 (seven of them after his death). Fessenden pioneered developments in radio technology, including the foundations of amplitude modulation (AM ...
The list of Reginald Fessenden patents contains the innovation of his pioneering experiments. Reginald Aubrey Fessenden received hundreds of patents for devices in fields such as high-powered transmitting, sonar, and television.
Existential therapy is a form of psychotherapy based on the model of human nature and experience developed by the existential tradition of European philosophy. It focuses on the psychological experience revolving around universal human truths of existence such as death, freedom, isolation and the search for the meaning of life. [1]
The Fessenden oscillator somewhat resembled a modern dynamic microphone or dynamic loudspeaker in overall construction. A circular metal plate, clamped at its edge, in contact with the water on one side, was attached on the other side to a copper tube, which was free to move in the circular gap of a magnet system.
c. 50 – Aulus Cornelius Celsus died, leaving De Medicina, a medical encyclopedia; Book 3 covers mental diseases.The term insania, insanity, was first used by him. The methods of treatment included bleeding, frightening the patient, emetics, enemas, total darkness, and decoctions of poppy or henbane, and pleasant ones such as music therapy, travel, sport, reading aloud, and massage.
Many cultures throughout history have speculated on the nature of the mind, heart, soul, spirit, brain, etc. For instance, in Ancient Egypt, the Edwin Smith Papyrus contains an early description of the brain, and some speculations on its functions (described in a medical/surgical context) and the descriptions could be related to Imhotep who was the first Egyptian physician who anatomized and ...
Fathometer – an early form of sonar invented by Reginald Fessenden in 1919 [7] Gramophone – co-invented by Alexander Graham Bell in 1889; Fessenden barretter. Hot-wire barretter – invented by Reginald Fessenden in 1902; Newsprint and pulped-wood paper – invented by Charles Fenerty in 1838 [7] Pager – invented by Irving "Al" Gross in ...
In Being and Time, Martin Heidegger reframes Edmund Husserl's phenomenological project into what he terms fundamental ontology.This is based on an observation and analysis of Dasein ("being-there"), human being, investigating the fundamental structure of the Lebenswelt (lifeworld, Husserl's term) underlying all so-called regional ontologies of the special sciences.