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During running, the speed at which the runner moves may be calculated by multiplying the cadence (steps per minute) by the stride length. Running is often measured in terms of pace , [ 54 ] expressed in units of minutes per mile or minutes per kilometer (the inverse of speed, in mph or km/h).
The War of Jenkins' Ear [a] was fought by Britain and Spain between 1739 to 1748. The majority of the fighting took place in New Granada and the Caribbean Sea, with major operations largely ended by 1742. It is considered a related conflict of the 1740 to 1748 War of the Austrian Succession.
Running. Different varieties of running were practiced such as running whilst carrying halteres, in armour, [ 13 ] in heavy sand, incorporating jumps along the way ( hurdling ), running whilst turning a large ring ( hula hoop ) along the ground by their side with a stick, and running whilst carrying a large metal tripod, running in a decreasing ...
Wooden dandy horse (around 1820), a patent-infringing copy of the first two-wheeler Original Laufmaschine of 1817 made to measure.. The dandy horse, an English nickname for what was first called a Laufmaschine ("running machine" in German), then a vélocipède or draisienne (in French and then English), and then a pedestrian curricle or hobby-horse, [1] or swiftwalker, [2] is a human-powered ...
[3] [4] [5] Cave paintings in the Bayankhongor Province of Mongolia dating back to the Neolithic Age (c. 7000 BC) show a wrestling match surrounded by crowds. [6] [failed verification] Neolithic Rock art found at the cave of swimmers in Wadi Sura, near Gilf Kebir in Egypt shows evidence of swimming and archery being practiced around 10,000 BCE. [7]
2004: First podcast, invented by Adam Curry and Dave Winer, is a program made available in digital format for download over the Internet and it usually features one or more recurring hosts engaged in a discussion about a particular topic or current event. [545] [546] [547] 2005: YouTube, the first popular video-streaming site, was founded
Feed dogs are the critical component of a "drop feed" sewing machine. A set of feed dogs typically resembles two or three short, thin metal bars, crosscut with diagonal teeth, which move back and forth in slots in a sewing machine's needle plate. Their purpose is to pull ("feed") the fabric through the machine, in discrete steps, in-between ...
In running events up to 200 m in distance and in horizontal jump events, wind assistance is permitted only up to 2.0 m/s. In decathlon or heptathlon, average wind assistance of less than 2.0 m/s is required across all applicable disciplines; and maximum of 4.0 m/s in any one event. As an exception, according to rule 36.2, specific event ...