실험: 렌즈 방정식
![실험: 렌즈 방정식, 8000678 [UE4010100-230], Geometric Optics](/imagelibrary/UE4010100-230/UE4010100-230_01_실험-렌즈-방정식.jpg)
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Objective: Determine the focal length of a lens using the Bessel method
On an optical bench it is possible to set up a light source, a lens, a screen and an object to be imaged in such a way that a well focussed image appears on the screen. Using the geometric relationships between the ray paths for a thin lens, it is possible to determine its focal length.