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The stadion (plural stadia, Ancient Greek: στάδιον; [1] latinized as stadium), also anglicized as stade, was an ancient Greek unit of length, consisting of 600 Ancient Greek feet . Its exact length is unknown today; historians estimate it at between 150 m and 210 m.
The term stadia comes from a Greek unit of length Stadion (equal to 600 Greek feet, pous) which was the typical length of a sports stadium of the time. Stadiametric rangefinding is used for surveying and in the telescopic sights of firearms , artillery pieces , or tank guns , as well as some binoculars and other optics.
A stadion is usually stated as 185 meters, or 607 feet, so the base has dimensions of about 2220 km by 2220 km, or 1380 miles by 1380 miles. In the ancient Greek system of measurement, the base of the New Jerusalem would have been equal to 144 million square stadia, 4.9 million square kilometers or 1.9 million square miles (roughly midway ...
an eighth of a Roman mile diaulos: δίαυλος: 2 stadia 369.9 m (404.5 yd) double pipe hippikon ἱππικόν: 4 stadia 739.7 m (808.9 yd) length of a hippodrome [5] milion μίλιον: 8 stadia 1.479 km (1,617 yd) Roman mile: dolichos [4] δόλιχος: 12 stadia 2.219 km (1.379 mi) long race parasanges, or league [6 ...
stadium: stade 625 pedes 185 m 607.14 ft 600 Greek feet or 125 passus or 1 ⁄ 8 mille [7] mille passus mille passuum mile: 5,000 pedes 1.48 km 4,854 ft 0.919 mi 1000 passus or 8 stadia leuga leuca (Gallic) league: 7,500 pedes 2.22 km 7,281 ft 1.379 mi Except where noted, based on Smith (1851). [2]
This ratio is known as the stadia constant or stadia interval factor. Thus the formula for distance is D = kS. where D is distance from the telescope to the rod; k is the stadia constant; S is the difference between the rod readings at the two stadia marks; For example, a typical stadia mark pair are set so that the ratio is 100.
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Stadia mark, crosshairs on the reticle of a theodolite or other surveying instrument Stadiametric rangefinding (also stadia method), a technique of measuring distances with a telescopic instrument Stadion (unit) (plural: stadia), an ancient Greek unit of length