Chapter 2, Problem 10RQ

Summary Introduction

To review:

The method of focusing on an object and what parameters determine that the object is in or out of focus.

Introduction:

The light rays that enter the eye fall on the retina/fovea after refraction. The retina is the focal point of the eye. In order to get the focus point always on the retina, the lens of the eye makes several changes in the width according to the incident light. The focal length or the focus is also adjusted in the microscope in order to get a clear image of the specimen or object.