Apparatus for teaching physics

Assisting High School Students to Redefine the Principle of Coriolis Force

“…그러나 이러한 실험장치는 많은 문제점을 내포하고 있다 (고태식, 2002). 지난 수 *Corresponding author: moonbk@jbnu.ac.kr *Tel: +82-63-270-2824 *Fax: +82-63-270-2802 십 년간 이들 실험 방법과 장치를 개선하기 위한 많 은 노력들이 있었다 (Minnix and Carpenter, 1983;Daw, 1987;Secco, 1999;최진호, 2004;김은주 외, 2009). 특히 국내에서 이뤄진 연구는 대부분 회전원 판에 구슬을 투입하기 위한 위치와 구슬의 궤적에 대한 부분을 중점적으로 개선하고자 노력하였다.…”

Investigative studies of refractive indices of liquids and a demonstration of refraction by the use of a laser pointer and a lazy Susan

“…While several methods have been designed for studying the refractive indices of liquids [1][2][3][4][5][6][7][8], most present difficulties for high school students. For example, some of these methods require students to find the minimum deviation angle of the refracted ray [1,2], to compare experimental data against a fitted linear function obtained from reference liquids [3], to solve a geometrical problem [4], to find the real and apparent depths of an object observed from above through the medium [5] or to make deductions from the combined effect of diffraction and refraction of a laser beam [6].…”

“…Other methods, such as placing the liquid directly in a semicircular clear plastic box or petri dish [7,8], are more straightforward but suffer from the nuisance of an additional refraction due to the thin layer of plastic or glass at the liquid-air interface. Here we describe the design of a simple homemade apparatus for refractive index studies of liquids which addresses the above concerns [9].…”