Introduction

=wutUnit 2 Optics=

Chapter 5 Optical Systems make use of Mirrors and Lenses

 * 5.3 Using Lenses to Form Images**

The way that light rays deflect through a piece of glass is totally predictable. There are even ways of how light rays bends! For example, if the light ray passes //into// a piece of glass or any lighter material, it bends toward the normal. While the light ray //passes// out of the glass and goes back where it came from, it bends away from the normal. People uses those facts about light to design and construct lenses. Lens are pieces of clear material, such as windows or glass, that deflects light to make light rays combine or bend. The shape of lens can form any image for example, curved mirrors.
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 * 5.3 Introduction** page 190
 * **Questions** || **Answers** ||
 * What facts about light make it possible to design and construct lenses? ||  ||
 * What is a lens? ||  ||
 * What shape can the lenses be? Does the shape affect the image? Explain. ||  ||
 * What shape can the lenses be? Does the shape affect the image? Explain. ||  ||
 * What shape can the lenses be? Does the shape affect the image? Explain. ||  ||

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