Who invented the compass?

The compass was invented by Ma Jun during the Three Kingdoms period.

Compass is a device used to indicate the direction in ancient China. The principle of the south guide car is to drive the two-wheeled south guide car to walk by manpower, so as to drive the Woodenhead in the car to rotate, so as to transmit the differential speed between the two wheels when turning, and then drive the Woodenhead on the car to point in the opposite direction at the same angle as the car turning, and let the Woodenhead on the car indicate the direction. No matter where the car turns, when the South Guide starts, Woodenhead's hand always points to the direction indicated by Woodenhead. "Although the car was brought back, the hand was always guided."

The compass was invented earlier. Legend has it that it was invented in the Western Zhou Dynasty, but the earliest exact record was in the Three Kingdoms period. According to historical records, Ma Jun was the first person who successfully manufactured the South Compass during the Three Kingdoms period. From the Three Kingdoms period, almost all the history books have recorded the south guide car, but they are all relatively brief. It was not until the Song Dynasty that there was complete information, and its internal structure was recorded in detail in the History of Song Dynasty.

Extended data

Ma Jun's main inventions:

Ma Jun was a mechanical master in ancient China. He has stuttered since he was a child and is not good at talking. But he likes thinking very much, is good at thinking, pays attention to practice at the same time, works hard, and especially likes to study mechanical problems. Ma Jun lived in poverty in his early years and lived in the countryside for a long time. He paid more attention to the reform of production tools and made outstanding contributions.

Ma Jun served as a minister in Wei State and developed machinery at the same time. Although he was not successful in his life, he studied hard and designed and manufactured many kinds of machinery. When I was in Wei Mingdi, I saw that there were 50 nie (pedal control board) for 50 warp and 60 nie for 60 warp, so I changed the loom to 12 nie, which greatly improved the efficiency.

When I was in Luoyang, I invented the irrigation and drainage waterwheel, which was called "rollover". It can lift water from a low place to a high place by manpower. He also researched and manufactured a compass, improved Zhuge Liang's crossbow and improved the stone delivery vehicle for siege. His "Water changes into a hundred plays", powered by water and driven by mechanical wooden wheels, makes puppets perform automatically, and the idea is very clever.

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