Who made the first hot air balloons? - Ancient China
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Hot air balloons

April 2017 - People in China began to fly kites made of silk and bamboo by about 800 BC. Maybe flying kites helped to give inventors the idea to try to get other things to fly too. According to the Chinese book Ten Thousand Infallible Arts of the Prince of Huai-Nan, written around 150 BC, someone did an experiment to get an eggshell to rise into the air. They blew the yolk and white out of the shell through a small hole (as people do to make Easter eggs). Then they stuck some burning weeds through the hole into the shell, and as the air inside the shell got hotter, because hot air rises, the eggshell got so light that the wind was able to lift the eggshell and it flew through the air. This couldn't really work - it's not enough hot air to lift an eggshell - but the story shows that by 150 BC people in China knew that hot air rises and were interested in using this fact to make things fly.

Almost four hundred years later, around 220 AD, one of the Shu Han king's advisors, Zhuge Liang or Zhuge Kongming, used the same idea to invent an early hot air balloon. During one of the many wars of the Three Kingdoms period, Zhuge designed a light to confuse the enemy: he put an oil lamp inside a large paper bag, and the hot air trapped inside the paper bag lifted the bag so it floated in the air. The light frightened the enemy and helped the Shu Han to win the battle. People started to call this kind of hot air balloon "Kongming's Light".

By about 1200 AD, when the Mongol Empire ruled China, these hot air balloons were popular at fairs and festivals, where crowds of people would gather to watch big paper balloons float up into the air. Mongol armies, learning about these balloons from Chinese people, started to use hot air balloons shaped like dragons either as battle flags or maybe as signals.

Learn by doing: Kongming's Light
More about Science in Ancient China
More about Ancient China

Bibliography and further reading about science in ancient China:

Kongming's Light project
More about Chinese science
Ancient China
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Karen Carr is Associate Professor Emerita, Department of History, Portland State University. She holds a doctorate in Classical Art and Archaeology from the University of Michigan. Follow her on Instagram or Twitter, or buy her book, Vandals to Visigoths.
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  • Carr, K.E. . Quatr.us Study Guides, . Web. 24 April, 2017