Ma Jun
3rd century Chinese mechanical engineer · Scientists · Lived 200 to 265 · aged 65
Ma Jun is read about 30 times a day, in 16 languages.
A typical day, 30 days to 23 August 2026
The middle day of the days counted, so one week of news cannot move it. The line under it is the last 60 days, one point a day.
Something wrong?Ma Jun, courtesy name Deheng, was a Chinese practical man, inventor, and politician who lived in the state of Cao Wei during the Three Kingdoms period of China.
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About this person
Ma Jun, courtesy name Deheng, was a Chinese practical man, 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. It is because of this revolutionary device that Ma Jun is known as one of the most brilliant mechanical engineers and inventors of his day. The device was re-invented by many after Ma Jun, including the astronomer and mathematician Zu Chongzhi (429-500). In the later medieval dynastic periods, Ma Jun's south-pointing chariot was combined in a single device with the distance-measuring odometer.
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