Ento Key

Objectives After working through this chapter, you should be able to: Explain what a ray diagram is Draw an accurate ray diagram for a convex lens Draw an accurate diagram…

Objectives After working through this chapter, you should be able to: Outline all the important features of a reduced eye Outline the difference between a spherical refractive error and a…

Objectives After working through this chapter, you should be able to: Define ‘thin lens’ and apply the vergence equations from chapter 2 to thin lenses Determine linear magnification of an…

Objectives After working through this chapter, you should be able to: Define what a ‘thick lens’ is, and calculate how to measure thickness Understand the relationship between thickness, curvature of…

Objectives After working through this chapter, you should be able to: Explain what light is in relation to the wave-particle duality Explain what the wavelength of light means in terms…

Objectives After working through this chapter, you should be able to: Explain why it is difficult to see the back of the eye and the anterior angle without the help…

Objectives After working through this chapter, you should be able to: Explain ‘thin film interference’ Explain why the interference pattern is colourful Produce a thin film demonstration of your own…

Below are some representative answers to the ‘Test Your Knowledge’ questions that appear at the end of every chapter. They’re designed to help you focus your learning, so make sure…

Objectives After working through this chapter, you should be able to: Explain how the human eye focuses distant light on the retina Explain the different contributions of refractive index and…

Below are some representative answers to the ‘practice questions’ that appear within any chapters where we need to learn to apply some maths. They’re designed to help you focus your…