Answer:
The Qin Dynasty is relatively short, and its scientific achievements are generally related to the Han Dynasty:
The scientific and technological achievements in the Qin and Han Dynasties ranked first in the world are:
Astronomy, the invention of papermaking, the advent of "nine chapters of arithmetic", the construction of medical theory system, etc. The simple arrangement is as follows:
The record of sunspots in the Western Han Dynasty is recognized as the earliest in the world.
In the Eastern Han Dynasty, Zhang Heng invented and made a seismograph that could remote measure the seismic orientation thousands of miles away, more than 1700 years earlier in Europe.
Nine Chapters on Arithmetic, written in the Eastern Han Dynasty, introduced many arithmetic propositions and their solutions and was the most advanced applied mathematics in the world at that time.
Zhang Zhongjing: Known as the "sage of medicine", his book on Febrile and Miscellaneous Diseases is an important classic of Chinese medicine in later generations.
Huado: known as the "God doctor", good at surgery, invented the Ma fei powder anesthetic, as early as 1600 years in the West.
The invention of paper making: the earliest in China, the early Western Han Dynasty had wadding paper and hemp paper. The world's earliest known paper has been unearthed in Fangmatan, Tianshui, Gansu Province. Improvement: In 105, CAI Lun made "CAI Hou paper" with bark and other materials for writing, easy to obtain and low cost. External: From the 6th century, it spread to Korea, Vietnam and Japan; In the 8th century, it spread to Central Asia and through Arabia to Africa and Europe.
