The earliest works on geometric optics

The earliest work of geometrical optics is Mo Jing.

Mo Jing contains rich knowledge about mechanics, optics, geometry, engineering technology and the basic elements of modern physics and mathematics. Mo Jing is an important philosophical document and logical work in ancient China. His view of nature, epistemology and formal logic theory constitute an important link in the history of pre-Qin philosophy.

Brief introduction of Mo Jing;

Mo Jing, also known as MoMo. It is an important part of Mozi written by mohists at the end of the Warring States Period in ancient China. It consists of six chapters, namely, classics, classics, Daqu and Xiaoqu, which mainly discuss epistemology, logic and natural science. Completed in your company in 14.

The main contents of Mo Jing:

The main content is epistemology and logic, which divides knowledge into "listening to knowledge", "speaking knowledge" and "near knowledge", emphasizing "combination of name and reality"; Put forward logical categories such as "innovation", "education", "assistance" and "promotion"; Hui Shi, GongSunLong and Zhuangzi's views on Ming studies were criticized and summarized. In addition, it also involves mathematics, optics, mechanics, psychology, economics and other contents, which is an important record of scientific achievements in the pre-Qin era.

Mo Jing's books contain rich knowledge of mechanics, optics, geometry, engineering technology and basic knowledge of modern physics and mathematics. This paper discusses the balance and system of force, simple machinery such as lever and inclined plane, and records the observation and research on pinhole imaging and plane mirror, concave mirror and convex mirror imaging. First of all, it puts forward the simple concepts of time ("long", that is, the universe) and space ("space").

Comments on Mo Jing's works;

The Book of Mohism also believes that the first thing to contact with things is to know their appearance, saying, "He who knows things knows them and observes them." "Representation" belongs to perceptual knowledge. If you want to get a clear and thorough understanding, you must go through the function of "heart" and say, "Ye Ming" and "Ye Ye, discuss things with what he knows, and what he knows is also important". That is to say, the superficial perceptual knowledge, through the inner thinking function, forms a deep rational knowledge, and then moves from "understanding things" to "discussing things"

On Mo Jing s View of Social History;

Mohist Classic inherits and develops Mozi's theory of "mutual benefit", openly advocates pragmatism, and measures right and wrong, good and evil with interests as the standard. It advocates the theory of historical evolution and thinks that Yao and Shun were good at that time, but not today. Today's society should be governed according to today's situation.