• The Science & Technology
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• no.1 s.428
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• pp.64-67
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• 2005

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.21 no.3
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• pp.51-57
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• 2021

In this paper, the relevance between Einstein's special theory of relativity (1905) and Bernoulli's fluid mechanics (1738), which motivates Shannon's theorem (1948), was derived from the AB=A/A=I dimension, and the Shannon's theorem channel code was simulated. When Bernoulli's fluid mechanics ΔP=pgh was applied to the Hallasan volcano Magma eruption, the dimensions and heights matched the measured values. The relationship between Einstein's special theory of relativity, Shannon's information theory, and the stack effect theory of fluid mechanics was analyzed, and the relationship between volcanic eruptions was mathematically proven. Einstein's and Bernoulli's conservation of energy and conservation of mass were the same in terms of bandwidth and power efficiency in Shannon's theorem.

• Information and Communications Magazine
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• v.28 no.11
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• pp.66-75
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• 2011

본고에서는 아인슈타인(1905) 특수상대성이론과 샤논(1948)의 정보이론의 탄생배경 중심으로 유도하였고, 이 아름다운 두 식을 비교, 설명하였다. 4G 무선 이동통신의 주파수 스펙트럼 효율을 증가시키기 위해, MIMO를 쓰고 샤논 캐퍼시티에 접근하기 위해 새로운 채널코딩 기술을 쓰고 있다. 모두 샤논의 손바닥 안에 있다.

• The Science & Technology
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• no.1 s.428
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• pp.87-92
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• 2005

1905년은 아인슈타인의 일생 가운데 가장 생산적인 해였다. 그는 그 해에 특수 상대론, 광전효과, 브라운 운동 및 E=mc² 등 네편의 주옥같은 논문을 발표했다. 한국물리학회와 과학문화진흥회는 이를 기념하기 위하여 2005년 7월 1일부터 2006년 2월말 까지 창경원 옆에 있는 서울 과학관에서 아인슈타인 100주년 기념 전시회를 갖는다. 전시회는 1)아인슈타인의 생애 2)시간과 공간 3)빛, 파동 및 물질 4)아인슈타인의 우주 5)아인슈타인과 예술 등 다섯 가지 주제를 체험위주로 기획하고 있다. 관람객들이 특수 상대론을 설명이 아니라 체험함으로써 일상생활에서는 어떻게 이용되고 있는가를 알도록 전시장을 꾸미고 있다. 각 주제별로 그 내용을 스케치해본다.

• Journal of Science Education
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• v.38 no.3
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• pp.569-584
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• 2014

The Purpose of this study was an analysis of high school student's understanding level about concepts of special relativity through in-depth interview. The 8 participants were 10th grade students in H high school in Ulsan city, who were interviewed and analyzed in the results of the interview about basic concepts of special relativity using achievement checklist in 6 situations(principle of constancy of light velocity, principle of relativity, relativity of simultaneity, garage paradox, rocket paradox). As results of the checklist, the participants showed high achievement in the content level of simple phenomena and simple concepts related to special relativity. But they showed low achievement in the concept level for fundamental understanding of special relativity. As results of the interview, it was found that the participants decided the order of events depending on their intuition and had a difficulty to apply the coordinate system to real situation, even though they mathematically understood it. In addition, some participants who could not understand the inertial coordinate system explained paradoxes of relativity depending on their intuition and had learner's chaos. Finally, though high school students usually being in formal operational stage, some students had difficulty to draw phenomena of space and time in two dimensional plane.

• Korean Journal of Logic
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• v.12 no.2
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• pp.171-199
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• 2009

This essay will consider evolutionary views that attempt to capture the continuity of theory-change from Newtonian to Einsteinian physics via the formal aspects of these theories. Although it cannot be denied that the formal aspects such as 'correspondence principles' and 'covariance principles' provide important information concerning this theory-change, these formal properties are not sufficient to capture the essential elements of any evolutionary account of the development of Einstein's special and general theories of relativity from Newtonian mechanics.

• 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 of Science Education
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• v.35 no.2
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• pp.283-294
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• 2011

The purpose of this study were to develop a tutorial for secondary students to understand of basic concepts of special relativity, which is appropriate for the cognition level of secondary student. We developed the concept evaluation tool and the tutorial material. Result from pretest and post-test are presented to verify the effect of the tutorial for helping student understanding of the concept such as time, event, reference frame, relativity of simultaneity. Secondary student had intense cognitive conflict about the complex concepts such as simultaneity, length contraction and time expansion. This tutorial could be proposed methodology to overcome cognitive difficulty for understanding these concepts.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.6
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• pp.319-327
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• 2016

In this paper we investigate that most of plants and animals have the symmetric property, such as a tree or a sheep's horn. In addition, the human body is also symmetric and contains the DNA. We can see the logarithm helices in Fibonacci series and animals, and helices of plants. The sunflower has a shape of circle. A circle is circular symmetric because the shapes are same when it is shifted on the center. Einstein's spatial relativity is the relation of time and space conversion by the symmetrically generalization of time and space conversion over the spacial. The left and right helices of plants and animals are the symmetric and have element-wise inverse relationships each other. The weight of center weight Hadamard matrix is 2 and is same as the base 2 of natural logarithm. The helix matrices are symmetric and have element-wise inverses.