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Four weeks before he presented his completed theory of total internal reflection and the rhomb, Fresnel submitted a memoir [30] in which he introduced the needed terms linear polarization, circular polarization, and elliptical polarization, [31] and in which he explained optical rotation as a species of birefringence: linearly-polarized light ...
After many years as rivals, Essel and Silor merged on 1 January 1972 to form Essilor, then the world's third-largest ophthalmic optical firm. [1] Its first year of existence was marked by the creation of Valoptec, a non-trading company composed of stockholder managers who held half the company's capital stock, and the purchase of Benoist-Bethiot, a French lens manufacturer specializing in ...
Melania Trump (born Melanija Knavs; [a] April 26, 1970) is a Slovenian-American former fashion model who served as the first lady of the United States from 2017 to 2021 as the wife of former president Donald Trump, the 45th president of the United States.
Machu Picchu [a] is a 15th-century Inca citadel located in the Eastern Cordillera of southern Peru on a mountain ridge at 2,430 meters (7,970 ft). [8] Often referred to as the "Lost City of the Incas", [9] it is the most familiar icon of the Inca Empire.
On June 2, 2017, the Department of Defense observed the first LGBT Pride Month since the repeal of the ban on open military service by transgender service members in the US military. [64] The one-year review period prior to allowing accession of transgender individuals was due by July 1, 2017, per DTM 16-005, [ 45 ] but military leaders had ...
This definition was all the more reasonable because it meant that when a ray was polarized by reflection (off an isotopic medium), the plane of polarization was the plane of incidence and reflection — that is, the plane containing the incident ray, the normal to the reflective surface, and the polarized reflected ray.
Raymond Edwin Mabus Jr. (/ m eɪ b ə s /; born October 11, 1948) is an American politician and lawyer.A member of the Democratic Party, he served as the 75th United States Secretary of the Navy from 2009 to 2017.
The Finder is an American procedural drama television series created by Hart Hanson that ran as a midseason replacement on Fox from January 12, 2012, to May 11, 2012. The series originally aired on Thursdays at 9:00 pm, [1] and moved to Fridays at 8:00 pm beginning April 6, 2012. [2]