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Ancient Observatories- Gaocheng, China

Ananya Nambiar

Created on August 26, 2022

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Gaocheng Astronomical Observatory

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Functions of the observatory:
  • Since ancient times, the Chinese believed the Earth had a centre.
  • Astronomers used observations of the lengths of the sun's shadow to find the latitude, which would help them fix provincial and territorial boundaries.
  • The location where an 8-chi (8.75 ft) long gnomon cast a 1.5-chi (1.64 ft) long shadow at noon on the summer solstice was considered to be the centre of the world, which is where they established their capital city.

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thank you!

Now you can reward yourself with this pretty picture :D