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

May 2016 - 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, began to use hot air balloons shaped like dragons either as battle flags or maybe as signals.

Bibliography and further reading about Chinese science:

Science in Ancient China

Science in Ancient China, by George Beshore (1998).

The Joy of Pi, by David Blatner (1999). It's not all about ancient China, but some of it is. For teenagers.

Ancient China: 2,000 Years of Mystery and Adventure to Unlock and Discover (Treasure Chest), by Chao-Hui Jenny Liu (1996). Lots of activities , including a Chinese calligraphy set.

Zero: The Biography of a Dangerous Idea, by Charles Seife and Matt Zimet (2000).

Kongming's Light project
More about Chinese science
Ancient China
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Professor Carr

Karen Eva Carr, PhD.
Assoc. Professor Emerita, History
Portland State University

Professor Carr holds a B.A. with high honors from Cornell University in classics and archaeology, and her M.A. and PhD. from the University of Michigan in Classical Art and Archaeology. She has excavated in Scotland, Cyprus, Greece, Israel, and Tunisia, and she has been teaching history to university students for a very long time.

Professor Carr's PSU page

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Now that the weather's nice, try some of these outdoor activities! How about bicycle polo, or archery for a Medieval Islam day? Or kite flying or making a compass for a day in Medieval China? How about making a shaduf for a day in Ancient Egypt? Holding an Ancient Greek Olympic Games or a medieval European tournament? Building a Native American wickiup?