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A wrought iron ruler, the Toise of Peru, also called Toise de l'Académie, was the French primary standard of the toise, and the metre was officially defined by an artifact made of platinum kept in the National Archives. [36] Besides the latter, another platinum and twelve iron standards of the metre were made by Étienne Lenoir in 1799. [37]
His electric meter was used by the British Government Board of Trade as the primary instrument for the measurement of electric current. His electric meter for measuring alternating current electricity was known worldwide by the end of the nineteenth century. [12] Securing accurate payment for electricity as a commodity had immense practical ...
Local government in Pennsylvania consists of five types of local governments: county, township, borough, city, and school district. [12] All of Pennsylvania is included in one of the state's 67 counties and each county is then divided into one of the state's 2,562 municipalities.
The Gatling gun, invented and patented in 1861 by Richard Gatling during the American Civil War, was the earliest precursor to a machine gun in the sense that it had all of the underlying features of reliable loading as well as the ability to fire sustained multiple bursts of rounds, the only drawback being, it had to be manually operated and ...
The French government gave practical support to the creation of an International Metre Commission, which met in Paris in 1870 and again in 1872 with the participation of about thirty countries. [62] On 20 May 1875, an international treaty known as the Convention du Mètre (Metre Convention) was signed by 17 states.
A parking meter is a device used to collect money in exchange for the right to park a vehicle in a particular place for a limited amount of time. The parking meter was invented by Carl C. Magee of Oklahoma City, Oklahoma, in 1935. Magee also holds the patent for a "coin controlled parking meter", filed on May 13, 1935, and issued on May 24, 1938.
In the Olympics, athletes run 1500 meters, not 1600 meters. [citation needed] Running races in the U.S. are usually run in metric distances (e.g., the 100 meters dash or the 5K run), although the mile distance remains popular. Even 5 and 10 kilometer races most often have mile markers on the course, and no kilometer markers.
Philadelphia, Pennsylvania was the first capital under the First Continental Congress from September 5, 1774 to October 24, 1774. Philadelphia, Pennsylvania was the first capital under the Articles of Confederation from March 1, 1781 to June 21, 1783 [11] [12] 1780 — First abolition law, while the state capital was in Philadelphia [13]