Ask the names of famous inventors in the first century.

Du was born in Jixian County, Henan Province (now Weihui). When Emperor Guangwu was Emperor Guangwu, he served as a counselor. In the seventh year of Jianwu (AD 3 1 year), when he was the magistrate of Nanyang, he created a water drain (hydraulic blower). The leather blower bag was continuously opened and closed by hydraulic driving machinery, and the air was sent to the iron smelting furnace to cast farm tools, which was labor-saving and multi-effective. He also presided over the cultivation of vicious ponds and the wide opening of farmland ponds, which made the county rich. Known as "Du Mu". Nanyang people praised: "There was Du Mu before calling the father (called the letter minister)".

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Invented in the first century A.D.

53, sliding mapping instrument:

China invented the sliding measuring instrument in the 5th century. The sliding plotter was not used in the west until 1638, which was more than 600 years later than that in China.

54, hydraulic bellows:

In 3 1 year, China people invented the hydraulic bellows. China people's pioneering work in utilizing water conservancy is one of the most important breakthroughs in energy supply before modern society. This is an important step towards the industrial revolution.

. According to the Book of the Later Han Dynasty, Du Shi, the magistrate of Nanyang, invented the hydraulic bellows (blast water row) for casting iron farm tools.

55, keel waterwheel:

In 80 AD, China people invented the keel waterwheel; The first square-bladed keel waterwheel in Europe was made in16th century, which was made directly according to the design of China, about 1500 years later than that of China.

"The History of the Later Han Dynasty Historical Records Biography of Zhang Rang": "Ye Ting ordered Bilan ... to thirst for black, and applied it to the west of the bridge and sprinkled it on the road in the northern suburbs of the southern suburbs." Li Xian's note: "Rollover, erect a locomotive to divert water; Thirst for black is a curved tube, which is also used to draw water from the air. " 《

56, stern rudder:

1 century, the stern rudder was invented; In the west, the rudder appeared on church sculptures in 1 180, which was about 1 100 years later than China.

57, porcelain:

China people invented porcelain in 1 century. Porcelain didn't appear in the west until18th century, which was about 1700 years later than China.