• The Science & Technology
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• v.12 no.3 s.118
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• pp.41-43
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• 1979

아인슈타인은 시공간에 관한 우리의 상식과 개념을 송두리째 바꾸어 버린 특수상대성이론 등 6개의 과학학술논문을 발표함으로써 그후 100년간의 물리학의 발전에 결정적인 영향을 미쳤다. 한국과학사총회와 한국과학저술인협회는 3월 17일 학산기술도서관에서 아인슈타인 탄생 11주년 기념 강연회를 가졌다. 다음은 이날 가진 민영기국립천문단장(아인슈타인과 우주론), 김정흠고대교수(상대론이후의 물리학), 이초식건대교수(아인슈타인의 과학철학)의 강연요지이다.

• Journal for History of Mathematics
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• v.14 no.2
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• pp.101-114
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• 2001

The ancient Egyptians only used fractions of the form 1/n, so any other fraction had to be represented as a sum of such unit fractions and all the unit fractions were different. This study explores some of the history of Egyptian fractions and gives you an algorithm for such representations. There's lots of investigations to do in this area of mathematics suitable for elementary school students and it is also designed as a resource for teachers.

• Tribology and Lubricants
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• v.6 no.2
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• pp.16-26
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• 1990

고대 이집트시대에서부터 동식물 유지가 차축유 등에 쓰여진 것이 잘 알려져 있으며 유지는 화학적으로 일종의 에스테르이다. 현재 사용되는 윤활유는 그 대부분 원유를 원료로 하는 석유계 윤활유이고 그 외에 동식물유 및 합성 윤활유가 일부 쓰이고 있다. 각종 도구나 기계류의 윤활제로서 동식물 유지가 쓰여지기 시작한 것은 기원전 1500년경부터라 한다. 합성윤활유는 19세기 중엽부터 연구개발이 시작되어 1930년대부터 1940년 사이에 Standard oil of Indiana사이에 $\alpha$-Olefin Oligomer를 그리고 독일 IG 사에서는 Olefin Oligomer와 에스테르를 처음 공업생산하였다.

• 발명특허
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• v.5 no.5 s.51
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• pp.18-21
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• 1980

히포크라테스(Hippokrates)이전의 그리스의학은 결코 의학이라고 부를수 없는 것이었다. B.C 11세기에 아스쿨레피오스(Asklepios)의 절이라고 불리는 $\lceil$병을 치료하는 절$\rfloor$이 있었다. 병자와 불구자들은 이 절에 와서 돼지와 양을 바치고 빌었다. 병은 신들이 인간을 달갑지 않게 여긴 결과 생긴 것이므로 건강을 회복하려면 물건을 바치고 정성을 들여야 한다고 믿었던 것이다. 그들은 절에 묵으면서 꿈을 꾸었고 중들은 해몽을 해서 병이 낫도록 도왔다. 때로는 약을 주기도 했다. 이 절의 중들은 강력한 의사승려의 조합을 이루었다.

• The Journal of Korean Philosophical History
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• no.52
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• pp.213-241
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• 2017

The systematic research on the Joseon history under Japanese imperialism in the 1920s, including that of the Joseon History Compilation Committee, was one of the stratagems that Japan employed to perpetuate the colonization of Joseon. The 'renovation of national traits', one of the three cultural measures taken by Japanese imperialism after the 1919 Independence Movement, was an attempt to degrade Joseon's nationality as extraneous, dependent, factional, and uncivilized. Against this, Koreans tried to create their own tradition that could prove Joseon's uniqueness and independence. The purpose of their study on ancient history, which became animated in the 1920s, was not to escape from the reality of Joseon into the idealized past, but to construct the history of Korean people anew. In this context, Dangun could refer to cultural identity as the communal origin of the nation, and this invented identity could lead to the healing of the injured subject. An Hwak's attempt was part of this efforts to call out myth as history. He suggests that Joseon's national traits are superior even to the Western civilization in several ways, and his vast plan to set up Joseon's cultural uniqueness and identity as history of universal civilization bore fruit in the History of Joseon Civilization. With cultural research for figuring out Joseon's national peculiarity and identity and historiography for revealing Joseon's national potential, he makes it possible for people to imagine various agents in the Joseon's past as belonging to a single nation with an identical history. Through his study on Joseon, he fought back the Japanese colonial view of history and tried to exalt national consciousness. Asserting independent and rational individuals as agency of civilization and culture though firm in the national perspective, he eventually went a way quite different from that of Japanese history of culture.

• Journal for History of Mathematics
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• v.22 no.1
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• pp.1-24
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• 2009

In this paper we have inferred the influence of Zeno on the construction of the potential infinite of Aristotle based on arguments of Zeno's paradoxes. When we examine the potential infinite of Aristotle as the basis of the ancient Greek mathematics, we can see that they did not permit the concept of the actual infinite necessary for calculus. The reason Why they recognized the potential infinite, denying the actual infinite as seen in Aristotle's physics could be found in their attempt to escape the illogicality shown in Zeno's arguments. Accordingly, this paper could provided one of reasons why the ancient Greeks had used uneasy exhaustion's method instead of developing the quadrature involving the limit concept.

• Journal for History of Mathematics
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• v.18 no.4
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• pp.29-38
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• 2005

This Paper discusses the history of the conflicts between synthesis and analysis, from those in heuristic and logic development style in ancient Greek to those in projective geometric methods. The two methods, which originally displayed difference in heuristic, offer the base for the two fields of geometry, the analytic geometry and the synthetic geometry in the 18th century as they originated from the field of geometry. As to the 19th century, they even display antagonistic aspects derived by having other perspectives about the true nature of mathematic but finally lose the reason of conflict as the ancient times when the dialectical sublation of both had been proposed.

• Korean Journal of Heritage: History & Science
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• v.38
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• pp.109-128
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• 2005

We dealt with the Wooden Shoes as a tool in the first chapter. You can doubt about the Wooden Shoes as a tool, which they were in Japan and China not Korea, strictly speaking, if they are real shoes or not. But anyway they had components of the Wooden Shoes in shape(form) or function, so it was expressed in the head part, cause of the possibility that Wooden Shoes as a tool are the previous stage of Wooden Shoes as shoes, though are not identified yet. In the second chapter, we dealt with the Wooden Shoes as shoes fundamentally. Recently, the Wooden Shoes of Shilla and Baekje were dug out each in Kyungsan-city Im-dang-dong and Buyeo-gun Neungsan-lee. Even though they were contemporary neighborhood countries, they had much differences in their forms of Wooden Shoes. While the Wooden Shoes of Baekje and the ancient Wooden Shoes of Japan are surprisingly alike. So we have tried to identify with the politic and diplomatic relation of Korea and Japan, through various literature records.

• Journal for History of Mathematics
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• v.10 no.1
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• pp.1-11
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• 1997

In this paper, we investigate a relation between the history of western logic and religion. Logic, as distinct from theology, began in Greece in the sixth century B. C. After running its course in antiquity, it was again submerged by theology as Christianity rose and Rome fell. Its second great period, from the eleventh to the fourteenth centuries, was dominated by the Catholic church, except for a few great rebels, such as the Emperor Frederick II(1195-1250). This period was brought to an end by the confusion that culminated in the Reformation. The third period, from the seventeenth century to the present day is dominated by science; traditional religious beliefs remain important but are felt to need justification, and are modified wherever science seems to make this imperative.

• Journal for History of Mathematics
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• v.23 no.4
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• pp.47-58
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• 2010

This study suggests new interpretation about ancient mathematician Archimedes' 'method'. For this, we examined the core issue related to the interpretation of the 'method' and identified the unclear relation between the principle of the lever and the indivisibles, both of which have consisted of the main point of arguments. And by having conducted the exploratory historical guesswork about Archimedes' careful use of indivisibles, we make a hypothesis that the role of the principle of the lever in Archimedes' 'method' should be the control of ratio of change.