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2. Manual vacuum cleaner - Wikipedia

   en.wikipedia.org/wiki/Manual_vacuum_cleaner

   The manual vacuum cleaner was a type of non-electric vacuum cleaner, using suction to remove dirt from carpets, being powered by human muscle, similar in use to a manual lawn mower. Its invention is dated to the second half of the 19th century, when patents were granted to inventors in the United States, Britain, France, and elsewhere.

3. General Motors 60° V6 engine - Wikipedia

   en.wikipedia.org/wiki/General_Motors_60°_V6_engine

   The General Motors 60° V6 engine family is a series of 60° V6 engines produced for both longitudinal and transverse applications. All of these engines are 12-valve cam-in-block or overhead valve engines, except for the LQ1 which uses 24 valves driven by dual overhead cams.

4. Henry (vacuum) - Wikipedia

   en.wikipedia.org/wiki/Henry_(vacuum)

   Henry is the brand name given to a cylinder vacuum cleaner made and sold by Numatic International, and is the only mass-produced consumer vacuum cleaner still made in the United Kingdom. [1] It is most notable for its cartoon eyes and mouth on the body of the vacuum cleaner , making a face, with the hose connector or hose as its nose.

5. Electrification - Wikipedia

   en.wikipedia.org/wiki/Electrification

   In the U.S. from 1870 to 1880 each man-hour was provided with .55 hp. In 1950 each man-hour was provided with 5 hp, or a 2.8% annual increase, declining to 1.5% from 1930 to 1950. [13] The period of electrification of factories and households from 1900 to 1940, was one of high productivity and economic growth.

6. Trinity (nuclear test) - Wikipedia

   en.wikipedia.org/wiki/Trinity_(nuclear_test)

   Trinity was the code name of the first detonation of a nuclear weapon, conducted by the United States Army at 5:29 a.m. MWT [a] (11:29:21 GMT) on July 16, 1945, as part of the Manhattan Project.

7. Wyndham New Yorker Hotel - Wikipedia

   en.wikipedia.org/wiki/Wyndham_New_Yorker_Hotel

   [21] [22] One of the steam engines was rated at 640 hp (480 kW), while the others were rated at 960 hp (720 kW). Each of the engines drove a direct current generator. [ 22 ] The power plant was operated from a switchboard measuring 60 ft (18 m) long and 7 ft (2.1 m) high. [ 23 ]