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  2. Cultural Revolution - Wikipedia

    en.wikipedia.org/wiki/Cultural_Revolution

    The Cultural Revolution, formally known as the Great Proletarian Cultural Revolution, was a sociopolitical movement in the People's Republic of China (PRC). It was launched by Mao Zedong in 1966 and lasted until 1976. Its stated goal was to preserve Chinese socialism by purging remnants of capitalist and traditional elements from Chinese society.

  3. List of Indian inventions and discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_Indian_inventions...

    Power series – The Kerala school of astronomy and mathematics or the Kerala school was a school of mathematics and astronomy founded by Madhava of Sangamagrama in Tirur, Malappuram, Kerala, India. Their work, completed two centuries before the invention of calculus in Europe, provided what is now considered the first example of a power series ...

  4. Indian mathematics - Wikipedia

    en.wikipedia.org/wiki/Indian_mathematics

    Indian mathematics emerged in the Indian subcontinent [1] from 1200 BCE [2] until the end of the 18th century. In the classical period of Indian mathematics (400 CE to 1200 CE), important contributions were made by scholars like Aryabhata, Brahmagupta, Bhaskara II, Varāhamihira, and Madhava.

  5. History of measurement - Wikipedia

    en.wikipedia.org/wiki/History_of_measurement

    [5] [6] This copper bar was discovered in Nippur, on the banks of the Euphrates, and is kept in the Istanbul Archaeological Museum. Archaeologists consider that this 51.85 centimetres long unit was the origin of the Roman foot. Indeed, the Egyptians divided the Sumerian cubit into 28 fingers and 16 of these fingers gave a Roman foot of 29.633 ...

  6. History of mathematical notation - Wikipedia

    en.wikipedia.org/wiki/History_of_mathematical...

    The historical development of mathematical notation can be divided into three stages: [4] [5] Rhetorical stage—where calculations are performed by words and tallies, and no symbols are used. [6] Syncopated stage—where frequently-used operations and quantities are represented by symbolic syntactical abbreviations, such as letters or numerals ...

  7. Little Red Guards - Wikipedia

    en.wikipedia.org/wiki/Little_Red_Guards

    In 1966, the Cultural Revolution began. In middle schools and universities, the Red Guards spread rapidly as a new student organization.. On February 4, 1967, the Central Committee of the Chinese Communist Party issued the "Notice on the Proletarian Cultural Revolution in Primary Schools (Draft)", [3] proposing that primary schools are "an important front" in the Cultural Revolution, and ...

  8. History of the metric system - Wikipedia

    en.wikipedia.org/wiki/History_of_the_metric_system

    The 20th century history of measurement is marked by five periods: the 1901 definition of the coherent MKS system; the intervening 50 years of coexistence of the MKS, cgs and common systems of measures; the 1948 Practical system of units prototype of the SI; the introduction of the SI in 1960; and the evolution of the SI in the latter half century.

  9. History of mathematics - Wikipedia

    en.wikipedia.org/wiki/History_of_mathematics

    The history of mathematics deals with the origin of discoveries in mathematics and the mathematical methods and notation of the past.Before the modern age and the worldwide spread of knowledge, written examples of new mathematical developments have come to light only in a few locales.