July 2022

What Is Zhang Heng Famous For?

The period of the Han dynasty 206 BCE – 9 CE, then 25–220 CE in ancient China is seen as a period when the growth in premodern Chinese science and technology peaked. Some of the great inventions that we know consider basic include the wheelbarrow, the adjustable wrench, and the horse-riding stirrup. Others that can into their full potential much later include […]

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