ENGINEER

Ma Jun

200 - 265

Photo of Ma Jun

Icon of person Ma Jun

Ma Jun (fl. 220–265), courtesy name Deheng, was a Chinese mechanical engineer, inventor, and politician who lived in the state of Cao Wei during the Three Kingdoms period of China. His most notable invention was that of the south-pointing chariot, a directional compass vehicle which actually had no magnetic function, but was operated by use of differential gears (which applies equal amount of torque to driving wheels rotating at different speeds). Read more on Wikipedia

Since 2007, the English Wikipedia page of Ma Jun has received more than 76,020 page views. His biography is available in 15 different languages on Wikipedia. Ma Jun is the 218th most popular engineer, the 797th most popular biography from China and the 5th most popular Chinese Engineer.

Memorability Metrics

  • 76k

    Page Views (PV)

  • 51.39

    Historical Popularity Index (HPI)

  • 15

    Languages Editions (L)

  • 4.68

    Effective Languages (L*)

  • 1.76

    Coefficient of Variation (CV)

Among ENGINEERS

Among engineers, Ma Jun ranks 218 out of 389. Before him are Émile Lemoine, Louis Dollo, Yuri Artsutanov, André Waterkeyn, W. Ross Ashby, and Charles F. Brush. After him are Georgy Beriev, Seymour Cray, Ed Heinemann, Eugène Belgrand, Léon Serpollet, and Kenneth Nichols.

Most Popular Engineers in Wikipedia

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Contemporaries

Among people born in 200, Ma Jun ranks 67. Before him are Sansang of Goguryeo, Hierocles, Manlia Scantilla, Cniva, Uranius, and Polemon of Laodicea. After him are Pope Demetrius I of Alexandria, Jotapianus, Amelius, Cornelia Supera, Philadelphus of Byzantium, and Theodotus of Byzantium. Among people deceased in 265, Ma Jun ranks 2. Before him is Sima Zhao.

Others Born in 200

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Others Deceased in 265

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  • Photo of Sima Zhao

    Sima Zhao

    POLITICIAN

    211 - 265

    HPI: 65.06

    Rank: 1

  • Photo of Ma Jun

    Ma Jun

    ENGINEER

    200 - 265

    HPI: 51.39

    Rank: 2

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In China

Among people born in China, Ma Jun ranks 797 out of 1,610. Before him are Xiao Hong (1911), Qiu Ying (1494), Saifuddin Azizi (1915), Chen Jingrun (1933), Gordon Liu (1951), and Dai Jin (1388). After him are Li Li-hua (1924), Leon Lai (1966), Chen Hongshou (1598), Fang Lizhi (1936), Fou Ts'ong (1934), and Shannon Lucid (1943).

Others born in China

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Among ENGINEERS In China

Among engineers born in China, Ma Jun ranks 5. Before him are Zhuge Liang (181), Lu Ban (-507), Su Song (1020), and Li Kui (-500). After him are Da-Wen Sun (1960).

Chinese born Engineers

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