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It recognizes that "the Earth and its ecosystems are our home" and that "it is necessary to promote harmony with nature and the Earth." The term Mother Earth is used because it "reflects the interdependence that exists among human beings, other living species and the planet we all inhabit". It is decided to designate April 22 as International ...
Lee de Forest (August 26, 1873 – June 30, 1961) was an American inventor, electrical engineer and an early pioneer in electronics of fundamental importance. He invented the first practical electronic amplifier, the three-element " Audion " triode vacuum tube in 1906. This helped start the Electronic Age, and enabled the development of the ...
A French ship-to-shore radio station in 1904. The invention of radio communication was preceded by many decades of establishing theoretical underpinnings, discovery and experimental investigation of radio waves, and engineering and technical developments related to their transmission and detection. These developments allowed Guglielmo Marconi ...
Juan de la Cierva y Codorníu, 1st Count of la Cierva ([ˈxwan de la ˈθjeɾβaj koðoɾˈni.u]; 21 September 1895 – 9 December 1936), was a Spanish civil engineer, pilot and a self-taught aeronautical engineer. His most famous accomplishment was the invention in 1920 of a rotorcraft [ 1 ][ 2 ] called Autogiro, [ 3 ] a single-rotor type of ...
History of radio. The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of ...
El Camino Real de Tierra Adentro (English: The Royal Road of the Interior Land), also known as the Silver Route, [ 1 ] was a Spanish 2,560-kilometre-long (1,590 mi) road between Mexico City and San Juan Pueblo (Ohkay Owingeh), New Mexico (in the modern U.S.), that was used from 1598 to 1882. It was the northernmost of the four major "royal ...
This day commemorates the Mexican Revolution which started on November 20, 1910 when Francisco I. Madero planned an uprising against dictator Porfirio Díaz 's 31-year-long iron rule. Article 74 of the Mexican labor law (Ley Federal del Trabajo) provides that the third Monday of November (regardless the date) will be an official holiday in Mexico.
Tierra de reyes (English: Land of Honor), [ 2 ] is an American telenovela premiered on Telemundo on December 2, 2014, and concluded on July 27, 2015. The telenovela is created by the Venezuelan author Rossana Negrín, based on the Colombian - American drama written by Julio Jiménez, entitled Pasión de Gavilanes. [ 3 ]