The first accurate estimate of the Earth’s circumference was made by the Hellenism scientist Eratosthenes (276- 195 B.C.) in about 240 B.C. The simplicity and elegance of Eratosthenes’ measurement of the circumference of the Earth by mathematics abstraction strategies were an excellent example of ancient Greek ingenuity. Eratosthenes’s success was a triumph of logic and the scientific method, the method required that he assume that Sun was so far away that its light reached Earth along parallel lines. That assumption, however, should be supported by another set of measurements made by the ancient Hellenism, Aristarchus, namely, a rough measurement of the relative diameters and distances of the Sun and Moon. Eratosthenes formulated the simple proportional formula, by mathematic abstraction strategies based on perfect sphere and a simple mathematical rule as well as in the geometry in this world. The Earth must be a sphere by a logical and empirical argument of Aristotle, based on the Greek word symmetry including harmony and beauty of form. We discuss the justification of these three bold assumptions for mathematical abstraction of Eratosthenes’s experiment for calculating the circumference of the Earth, and justifying all three assumptions from historical perspective for mathematics and science education. Also it is important that the simplicity about the measurement of the earth's circumstance at the history of science.
목차
ABSTRACT Ⅰ. INTRODUCTION Ⅱ. Measurement of circumference of the Earth by Eratosthenes three bold assumptions Ⅲ. Clearly can We Consider the value (15% off) obtained as Modern real value? Ⅳ.Mathematical abstraction & justification Ⅴ. Discussion and Conclusion 국문요약 Acknowledgements References
키워드
Eratosthenesestimate of the Earth’s circumferencemathematics abstractionSymmetryMathematics & science educationsimplicity
저자
Jun-Young Oh [ 오준영 | Hanyang University ]
Corresponding author
대한지구과학교육학회 [The Korean Society of Earth Science Education]
설립연도
2008
분야
사회과학>교육학
소개
본 학회는 지구과학 교과교육 전공 교수들을 중심으로 2008년 1월 창립되었으며, 지구과학 교육 분야의 활발한 학문연구와 발표, 교류 및 보급을 통해 일반인들이나 학생들에게 지구과학 교육의 중요성에 대한 이해를 돕는 것은 물론 우리나라의 지구과학교육의 발전에 기여하고자 설립함.
간행물
간행물명
대한지구과학교육학회지 [Journal of the Korean Society of Earth Science Education]