Arch vs Eš

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An arch is a vertical curved structure that spans an elevated space and may or may not support the weight above it, or in case of a horizontal arch like an arch dam, the hydrostatic pressure against it. Arches may be synonymous with vaults, but a vault may be distinguished as a continuous arch forming a roof.

Arches appeared as early as the 2nd millennium BC in Mesopotamian brick architecture, and their systematic use started with the ancient Romans, who were the first to apply the technique to a wide range of structures.

Source: Wikipedia

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Eš (German: Esche) is a village and municipality (obec) in Pelhřimov District in the Vysočina Region of the Czech Republic. The municipality covers an area of 4.07 square kilometres (1.

57 sq mi), and has a population of 50 (as at 2007). Eš lies approximately 16 kilometres (10 mi) west of Pelhřimov, 43 km (27 mi) west of Jihlava, and 83 km (52 mi) south-east of Prague.

Source: Wikipedia