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In areas of machining where the thou is used, 0.0001 inches (2.54 micrometres) is often treated as a basic unit and can be referred to as "one tenth", meaning "one tenth of a thou" or "one ten thousandth". [8] Other common terms used in machining with Imperial units involve adding tenths together to achieve a specific tolerance or measurement.
A ruler found at Lothal (2400 BCE) is calibrated to about 1.6 mm (1 ⁄ 16 in). [46] The decimal subdivision on the ruler is noteworthy, as it predates the modern metric system by 3000 years or more. The base unit used was known as the angula (finger) and is about 17 mm.
A golden rectangle with long side a + b and short side a can be divided into two pieces: a similar golden rectangle (shaded red, right) with long side a and short side b and a square (shaded blue, left) with sides of length a.
The Indus script, also known as the Harappan script and the Indus Valley script, is a corpus of symbols produced by the Indus Valley Civilisation.Most inscriptions containing these symbols are extremely short, making it difficult to judge whether or not they constituted a writing system used to record a Harappan language, any of which are yet to be identified. [3]
The average household size was 2.50. There were 1,070 families (73.0% of households); the average family size was 2.86. The age distribution was 783 people (21.3%) under the age of 18, 253 people (6.9%) aged 18 to 24, 710 people (19.3%) aged 25 to 44, 1,270 people (34.6%) aged 45 to 64, and 655 people (17.8%) who were 65 or older.
The current chronology, basically laid down by Mark Blackburn in the mid-1980s, rests on the large Cimiez hoard from southern Gaul, which contained sceattas of several secondary types alongside local issues of named rulers that allowed the hoard to be dated c. 715/20.
Ras Al Khaimah has been the site of continuous human habitation for 7,000 years, one of the few places in the country and the world where this is the case, [8] and there are many historical and archaeological sites throughout the emirate - local sources cite 1,000 [9] - dating from different time periods, including remnants of the Umm Al Nar Culture (3rd millennium BC). [10]
The most extreme temperatures recorded in Denmark, since 1874 when recordings began, was 36.4 °C (97.5 °F) in 1975 and −31.2 °C (−24.2 °F) in 1982. [59] Denmark has an average of 179 days per year with precipitation, on average receiving a total of 765 millimetres (30 in) per year; autumn is the wettest season and spring the driest. [ 58 ]