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Fire triangle. The fire triangle or combustion triangle is a simple model for understanding the necessary ingredients for most fires. [1] The triangle illustrates the three elements a fire needs to ignite: heat, fuel, and an oxidizing agent (usually oxygen). [2] A fire naturally occurs when the elements are present and combined in the right ...
The control of fire by early humans was a critical technology enabling the evolution of humans. Fire provided a source of warmth and lighting, protection from predators (especially at night), a way to create more advanced hunting tools, and a method for cooking food. These cultural advances allowed human geographic dispersal, cultural ...
During the opening days of Operation Iraqi Freedom, deconflicting US Army Patriot batteries and allied aircraft routes turned out being more difficult than expected, resulting in three major friendly fire incidents: [11] in one of them, on March 24, 2003, a USAF F-16CJ Fighting Falcon fired an AGM-88 HARM at a Patriot missile battery after the ...
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The aim of WikiProject Maps is to improve the quality of maps across the Wikimedia Foundation. The Maps for Wikipedia page is an overview of different formats and tools for maps available on Wikipedia. The Map conventions page provides advice for creating and improving maps. The Map workshop page can be used to add your map requests and your ...
The first executive offices were constructed between 1799 and 1820 on the former site of the Washington Jockey Club, flanking the White House. [5] In 1869, following the Civil War, Congress appointed a commission to select a site and submit plan and cost estimates for a new State Department Building, with possible arrangements to house the War and Navy departments.
Real Heroes: Firefighter is a first-person shooter video game for the Wii, developed by Epicenter Studios and published by Conspiracy Entertainment. [1] A Nintendo 3DS version (Real Heroes: Firefighter 3D) was released on September 12, 2012, by Zordix and a remastered PC version (on Steam) was released on March 14, 2017, by Flying Tiger Entertainment, with a high definition re-release ...
Epilobium angustifolium L. Chamerion angustifolium (L.) Holub. Chamaenerion angustifolium is a perennial herbaceous flowering plant in the willowherb family Onagraceae. It is known in North America as fireweed and in Britain and Ireland as rosebay willowherb. [1] It is also known by the synonyms Chamerion angustifolium and Epilobium angustifolium.