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History of measurement | A Wisdom Archive on History of measurement | | History of measurement A selection of articles related to History of measurement | |
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History of measurement
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ARTICLES RELATED TO History of measurement | | | |  History of measurement: Encyclopedia II - History of measurement - IntroductionUnits of measurement were among the earliest tools invented by humans. Primitive societies needed rudimentary measures for many tasks: constructing dwellings of an appropriate size and shape, fashioning clothing, or bartering food or raw materials.
The earliest known uniform systems of weights and measures seem to have all been created sometime in the 4th and 3rd millennia BC among the ancient peoples of Mesopotamia, Egypt and the Indus Valley, and perhaps also Elam in Persia as well. The most astounding of these ancient systems was p ...
See also:History of measurement, History of measurement - Introduction, History of measurement - History of units, History of measurement - Units of length, History of measurement - Typographical units, History of measurement - Units of mass, History of measurement - Units of time and angle Read more here: » History of measurement: Encyclopedia II - History of measurement - Introduction |
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| | | | History of measurement: Encyclopedia II - Units of measurement - History Units of measurement were among the earliest tools invented by humans. Primitive societies needed rudimentary measures for many tasks: constructing dwellings of an appropriate size and shape, fashioning clothing, or bartering food or raw materials.
The earliest known uniform systems of weights and measures seem to have all been created sometime in the 4th and 3rd millennia BC among the ancient peoples of Mesopotamia, Egypt and the Indus Valley, and perhaps also Elam in Persia as well.
Many systems were based on the use of parts ...
See also:Units of measurement, Units of measurement - Introduction, Units of measurement - History, Units of measurement - Systems of measurement, Units of measurement - Base and derived units, Units of measurement - Calculations with units, Units of measurement - Units as dimensions, Units of measurement - Guidelines, Units of measurement - Expressing a physical value in terms of another unit Read more here: » Units of measurement: Encyclopedia II - Units of measurement - History |
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| | | | History of measurement: Encyclopedia II - History of technology - Measuring technological progress Many sociologists and anthropologists have created social theories dealing with social and cultural evolution. Some, like Lewis H. Morgan, Leslie White, and Gerhard Lenski, declare technological progress to be the primary factor driving the development of human civilisation.
Morgan's concept of three major stages of social evoluton (savagery, barbarism, and civilization) can be divided by technological milestones, like fire, the bow, and pottery in the savage era, domestication of animals, agriculture, and metalworking ...
See also:History of technology, History of technology - By period and geography, History of technology - Early technology, History of technology - Prehistoric times, History of technology - Ancient Egypt, History of technology - Tribal Europe, History of technology - Ancient Rome, History of technology - Ancient India, History of technology - Ancient China, History of technology - Medieval China, History of technology - Inca, History of technology - Maya, History of technology - European, History of technology - Measuring technological progress, History of technology - By type of technology, History of technology - History of biotechnology, History of technology - History of civil engineering, History of technology - History of communication, History of technology - History of computing, History of technology - History of consumer technology, History of technology - History of electrical engineering, History of technology - History of energy technology, History of technology - History of materials science, History of technology - History of medicine, History of technology - History of military technology, History of technology - History of nuclear technology, History of technology - History of scientific technology, History of technology - History of timekeeping, History of technology - History of transport technology, History of technology - Related history, History of technology - Related disciplines, History of technology - Related subjects, History of technology - Future of science and technology speculative, History of technology - People, History of technology - Historiography of science and technology, History of technology - Historians of science and technology, History of technology - Journals and periodicals in the history of science and technology, History of technology - Research institutes Read more here: » History of technology: Encyclopedia II - History of technology - Measuring technological progress |
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| | | | History of measurement: Encyclopedia II - Lebesgue measure - Construction of the Lebesgue measure The modern construction of the Lebesgue measure, based on outer measures, is due to Carathéodory. It proceeds as follows:
For any subset B of Rn, we can define
Here, vol(M) is sum of the product of the lengths of the involved intervals. We then define the set A to be Lebesgue measurable if
for all sets B. These Lebesgue measurable sets form a σ-algebra, and the Lebesgue measure is defined by λ(A< ...
See also:Lebesgue measure, Lebesgue measure - Examples, Lebesgue measure - Properties, Lebesgue measure - Null sets, Lebesgue measure - Construction of the Lebesgue measure, Lebesgue measure - Relation to other measures, Lebesgue measure - History Read more here: » Lebesgue measure: Encyclopedia II - Lebesgue measure - Construction of the Lebesgue measure |
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