How to measure the length of a piece of wood, a python and a football pitch. The approximation of length is discussed before a demonstration of how to record the measurement using different units: ...

Ancient Greek measurement unit: Protocorinthian Cotyle, 650-625 BC. Ancient Agora Museum at Athens, Credit: Zde CC BY-SA 4.0 The ancient Greeks developed sophisticated units of measurement ranging ...

Units of speed are always a unit of length per unit of time. Different units of length and time may be chosen depending on the situation. This makes it easier to read the measurements. For example, ...

Oliver Smoot is retiring from his chairmanship of the American National Standards Institute. He lent his name — and body — to the "smoot" — a unit of length, equal to his height (5 feet, 7 inches). In ...

THE battle of the Standards is over, and we may say the Metre has gained the victory. The need of a new system of weights and measures to amend the strange diversities which disfigure our practice ...