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The ancient Egyptian royal cubit (meh niswt) is the earliest attested standard measure.Cubit rods were used for the measurement of length.A number of these rods have survived: two are known from the tomb of Maya, the treasurer of the 18th dynasty pharaoh Tutankhamun, in Saqqara; another was found in the tomb of Kha in Thebes.
The digit or finger is an ancient and obsolete non-SI unit of measurement of length. It was originally based on the breadth of a human finger. [1] It was a fundamental unit of length in the Ancient Egyptian, Mesopotamian, Hebrew, Ancient Greek and Roman systems of measurement. In astronomy a digit is one twelfth of the diameter of the sun or ...
A 36 square cubit area was known as a kalamos and a 144 square cubit area as a hamma. [17] The uncommon bikos may have been 1 + 1 ⁄ 2 hammata or another name for the cubit strip. [17] The Coptic shipa (ϣⲓⲡⲁ) was a land unit of uncertain value, possibly derived from Nubia. [43]
Casing stone from the Great Pyramid. The seked of a pyramid is described by Richard Gillings in his book 'Mathematics in the Time of the Pharaohs' as follows: . The seked of a right pyramid is the inclination of any one of the four triangular faces to the horizontal plane of its base, and is measured as so many horizontal units per one vertical unit rise.
Flinders Petrie reported on a rod that shows a length of 520.5 mm, a few millimetres less than the Egyptian cubit. [8] A slate measuring rod was also found, divided into fractions of a Royal Cubit and dating to the time of Akhenaten. [9] Further cubit rods have been found in the tombs of officials.
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The Public Cubit counted 24 daktyloi and was used mainly in construction, hence was also called lithikos ("stone"), [xylo]pristikos ("[wood]-sawing"), tektonikos ("builder's"). [6] The Imperial or Geometric Cubit counted 32 daktyloi and was used for the measurement of fields for the purpose of tax assessment. [6]
This was the origin of the "pyramid inch". Taylor regarded the "pyramid inch" to be 1/25 of the "sacred cubit", ancient unit based on the forearm length from the tip of the middle finger to the bottom of the elbow, whose existence had earlier been postulated by Isaac Newton. [4]