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RTX Corporation. RTX Corporation, formerly Raytheon Technologies Corporation, [3] [4] is an American multinational aerospace and defense conglomerate headquartered in Arlington, Virginia. It is one of the largest aerospace and defense manufacturers in the world by revenue and market capitalization, as well as one of the largest providers of ...
raytheon.com (Archived) The Raytheon Company was a major U.S. defense contractor and industrial corporation with manufacturing concentrations in weapons and military and commercial electronics. It was previously involved in corporate and special-mission aircraft until early 2007. Raytheon was the world's largest producer of guided missiles. [3]
Before the Common Era 9th millennium BCE – 3rd millennium BCE 101st century BCE – 50th century BCE. c. 9,600 BCE – c, 5,000 BCE – Mesolithic rock art in Sicily depicts male figures in hives that have been interpreted variously, including as hunters, acrobats, religious initiates, and gay sex.
The Photo History Timeline Collection; In the eye of the camera — Illustrated historical essay about early photography; Lippmann's and Gabor's Revolutionary Approach to Imaging; The Digital Camera Museum with accurate history section and many rare items Archived 2017-02-16 at the Wayback Machine; The Fascinating Timeline of Photography Technology
1667 to 1875. 1667: Robert Hooke creates an acoustic string telephone that conveys sounds over a taut extended wire by mechanical vibrations. [1] [2] 1844: Innocenzo Manzetti first suggests the idea of an electric "speaking telegraph", or telephone. 1849: Antonio Meucci demonstrates a communicating device to individuals in Havana.
List of Apple products. This timeline of Apple products is a list of all computers, phones, tablets, wearables, and other innovation made by Apple Inc. This list is ordered by the release date of the products. Macintosh Performa models were often physically identical to other models, in which case they are omitted in favor of the identical twin.
The history of photography began with the discovery of two critical principles: The first is camera obscura image projection, the second is the discovery that some substances are visibly altered by exposure to light. There are no artifacts or descriptions that indicate any attempt to capture images with light sensitive materials prior to the ...
The praxinoscope improved on the zoetrope by replacing its narrow viewing slits with an inner circle of mirrors that intermittently reflected the images. The praxinoscope allowed a much clearer view of the moving image compared to the zoetrope, since the zoetrope's images were actually mostly obscured by the spaces in between its slits.