2018 GGHS Team 1

Introduction

A comparison of the Technology of Goryeo and Foreign Countries

Motives for doing research

Through the study of hidden technology from the Goryeo Dynasty that many people do not know about, By comparing the characteristics of the cannons and metal types of the Goryeo Dynasty with those of foreign cannons and metal types, we explained the excellence of the technology of the Goryeo Dynasty. As a student at Ganghwa Girls ' High School in Ganghwa Island, which was the capital of Goryeo, We wanted to accumulate diverse knowledge about the Goryeo Dynasty. As of 2018, the research was conducted to mark the 1100th anniversary of the founding of the Goryeo.

Background knowledge

What is a cannon(Chongtong gun)?

• A type of weapon used to fire arrows from the Goryeo Dynasty.
• The chongtong gun is a cannon ball of the Joseon Dynasty. The names were divided according to the size, weight of gunpowder, the number of bullets, and the distance to which they were used, according to the order of 천자문(千子文) was separated by 천(天)·지(地)·현(玄)·황(黃)
• A cannon is a large, uncarrying weapon with a large firing range and a greater range than the gun.

Since the introduction of artillery in Europe in the middle of the 14th century, main steel shells replaced stone at the end of the 15th century, At the same time, in France, a new lighter a cannon cast in bronze was placed on a horse-drawn motorcycle carriage, which led to the emergence of field guns. The new mobile French field gun has introduced the concept of a trunnion, making it easier for guns to be placed on permanent cartwheels, allowing for relatively accurate aim and range expansion.

Modern times

Modern technology

3D Printer

This is a photo of a 3D printer.

Today, a three-dimensional printer(3D - printer) has been created combining traditional printing technology with the wisdom of our ancestors. Three-dimensional printing is a manufacturing technique that produces three-dimensional objects by spraying a continuous layer of matter. By using this, they were able to create objects in three dimensions, not in two dimensions.