Schoenus
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| Schoenus in hieroglyphs |
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Schoenus (Template:Langx; Template:Langx, schoinos, lit. "rush rope"; Template:Langx, lit.Script error: No such module "String"."river-measure") was an ancient Egyptian, Greek and Roman unit of length and area based on the knotted cords first used in Egyptian surveying.
Length
The Greeks, who adopted it from the Egyptians, generally considered the schoinos equal to 40 stades, but neither the schoinos nor the stadion had an absolute value, and there were several regional variants of each. Strabo noted that it also varied with terrain, and that when he "ascended the hills, the measures of these schoeni were not everywhere uniform, so that the same number sometimes designated a greater, sometimes a less actual extent of road, a variation which dates from the earliest time and exists in our days." Herodotus (2.6 and 2.149) says, that schoenus is 60 stadia or about Script error: No such module "convert"..[1] This agrees with the distance implied by the Triacontaschoenus stretching south of the First Cataract in Roman-era Nubia.[2] Pliny the Elder 5.11 that is 30 stadia. Strabo 17.1.24: according to the place, between 30 and 120 stadia. Isidore of Charax's schoenus—used in his Parthian Stations—has been given values between Template:Cvt, but the precise value remains controversial given the known errors in some of his distances.[3][4]
Script error: No such module "anchor". The Byzantine schoinion or "little schoenus" (Script error: No such module "Lang"., skhoinion) was 20Template:Thinsp000 Greek feet or 33⅓ stades.[5]
Area
The Romans also used the schoenus as a unit of area, equivalent to the actus quadratus or half-jugerum (Script error: No such module "convert".) formed by a square with sides of 120 Roman feet. The Heraclean Tables admonished that each schoenus should be planted with 4 olive trees and some grape vines, upon penalty of fines.[6]
See also
- Egyptian, Greek, and Roman units
- Rope and knot, related units
- Knotted cord, the surveying tool initially responsible for the schoenus
References
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