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Julius Edgar Lilienfeld proposed the concept of a field-effect transistor in 1925.. The thermionic triode, a vacuum tube invented in 1907, enabled amplified radio technology and long-distance telephony.
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Qatar, [a] officially the State of Qatar, [b] is a country in West Asia.It occupies the Qatar Peninsula on the northeastern coast of the Arabian Peninsula in the Middle East; it shares its sole land border with Saudi Arabia to the south, with the rest of its territory surrounded by the Persian Gulf.
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Leon Festinger, born in 1919 in New York City, [6] was an American social psychologist whose contributions to psychology include the cognitive dissonance theory, social comparison theory, and the proximity effect.
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Virtual Fixtures – first AR system, U.S. Air Force, Wright-Patterson Air Force Base (1992). Augmented reality (AR) is an interactive experience that combines the real world and computer-generated 3D content.