두 장의 방사형 격자에 의해 나타나는 무아레 무늬를 이용한 지구 자기장 모델의 시각화 = A study on the Model of Earth's Magnetic field using the Moire Moire Fringes formed by the Radial gratings

국문 초록 (Abstract)

눈에 보이지 않는 현상에 대한 개념을 형성하는데 도움을 주는 측면에서 주기적 구조물에 의해 만들어지는 무아레 무늬를 교육 자료로 활용하고자 한다. 두 장의 방사형 격자를 이용하여 『전기·자기』 단원에서 자기장과 전기장의 개념형성과 지구자기장의 시각화 및 새로운 모델 제시에 도움을 주고자 한다. 이들 주기적 구조물에 의해 만들어지는 무아레 무늬를 물리교육에 활용하면 물리교과에 대한 흥미를 유발시킬 수 있을 뿐만 아니라 학생 스스로 창의적인 아이디어를 낼 수 있는 기회를 가질 수 있는 측면에서 교수 학습 효과를 높일 수 있는 한 방안이 될 것이다.

다국어 초록 (Multilingual Abstract)

A major cause for an earth magnetic field is explained by the Dynamo theory in the present day. Dynamo theory is that an earth magnetic fields is caused by the convection current occurs in the out core. That is, original reason of an earth magnetic field is made by dipoles in the earth. The shape of an earth magnetic field is resemblant with shape of a magnetic field occurred around a bar magnet. The shape of an earth magnetic field just likes the shape of a magnetic field occurred around a bar magnet.
The new moire fringes formed by superimposed two radial gratings can be displayed equipotential magnetic surface. Therefore, We are going to visualize an earth magnetic field by using moire fringes formed by superimposed two radial gratings.
As a results, we obtained the following three results by this study.
The first, We developed that moire fringes formed by two radial gratings can be present the scalar magnetic equipotentials in the magnetic field.
The second, we found out the similarity between the moire fringes formed by two radial gratings and an earth magnetic field formed by dipoles.
The third, we developed educational materials that it can become help to students explain an earth magnetic field using the moire fringes formed by two radial gratings.
This materials may contribute greatly to improve the teaching-learning effect. Finally, we emphasized that earth magnetic field must be appeared a circle type neither hyperbolic nor ellipse.