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The stadion of ancient Nemea, Greece. The first 13 editions of the Ancient Olympic Games featured only one event—the stadion race, which was a sprinting race from one end of the stadium to the other. [4]
Middle-distance running events are track races longer than sprints, ranging from 500 metres up to two miles (3218.688 metres).The standard middle distances are the 800 metres, 1500 metres and mile run, although the 3000 metres may also be classified as a middle-distance event. [1]
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An ancient Greece vase from 600 BC depicting a running contest An early model of hurdling at the Detroit Athletic Club in 1888 Panathenaic Stadium in Athens, one of the first modern track and field stadiums American athlete Jim Thorpe lost his Olympic medals after taking expense money prior to the 1912 Summer Olympics for playing baseball, a violation of Olympic amateurism rules.
Lalu Muhammad Zohri (born 1 July 2000) [2] is an Indonesian track and field sprinter. He is the first Indonesian male to win a medal at the IAAF World U20 Championships by winning a gold medal in the 100m.
Paavo Nurmi breaks the 1,500 m world record in Helsinki in 1924.. The 1500-metre run became a standard racing distance in Europe in the late 19th century, perhaps as a metric version of the mile, a popular running distance since at least the 1850s in English-speaking countries.
In air at STP the mean free path of molecules is about 96 nm. Since electrons are much smaller, their average distance between colliding with molecules is about 5.6 times longer, or about 0.5 μm. This is a substantial fraction of the 7.5 μm spacing between the electrodes for minimal arc voltage.
An aqueous solution containing 2 g of glucose and 2 g of fructose per 100 g of solution contains 2/100=2% glucose on a wet basis, but 2/4=50% glucose on a dry basis.If the solution had contained 2 g of glucose and 3 g of fructose, it would still have contained 2% glucose on a wet basis, but only 2/5=40% glucose on a dry basis.