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# Reflection power point

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### Reflection power point

1. 1. Reflection By:Nancy Ramirez and Katlin Sapp
2. 2. Objectives • Distinguish between specular and diffuse reflection of light. • Apply the law of reflection for flat mirrors. • Describe the nature of images formed by flat mirrors.
3. 3. Introduction • • • In this lesson the students will learn the differences between specular and diffuse reflection of light. The students will learn how to apply the law of reflection for flat mirrors. Students will learn to describe the nature of images formed by flat mirrors.
4. 4. Specular vs. Diffuse Reflection • • Specular Reflection is when light is reflected at an angle, from a smooth surface. Diffuse Reflection is when light is reflected in all directions from a rough surface.
5. 5. Law of Reflection • • • • The relationship between an angle of reflection and the angle of incidence is known as the Law of Reflection. Incident and Reflected rays make equal angles with a perpendicular line to the surface which is called the Normal. The ray of light that approaches the mirror is the Incident Ray. The ray of light that leaves the mirror is known as the Reflected Ray.
6. 6. Law of Reflection cont. • • • The angle between the incident ray and the normal line is the Angle of Incidence. The angle between the reflected ray and the normal line is the Angle of Reflection. The law of reflection states that the Angle of Incidence=Angle of Reflection
7. 7. • • • Nature images formed by flat mirrors The two types of images are real images and virtual images. Real images are formed by rays that converge at the image point in a mirror. Virtual images are images whose light rays do not converge at the image point but appear to emerge from that point.
8. 8. Nature images formed by flat mirrors cont. • • Virtual images are usually seen in flat mirrors. To know where an image is formed, follow two rays of light as they reflect from the mirror.
9. 9. Bibliography • • • Davidson, M. W. (n.d.). Molecular Expressions Microscopy Primer: Light and Color - Specular and Diffuse Reflection: Interactive Java Tutorial. Molecular Expressions Microscopy Primer: Light and Color - Specular and Diffuse Reflection: Interactive Java Tutorial. Retrieved October 18, 2013, from http://www.micro.magnet.fsu.edu/primer/java Gibbs, K. (n.d.). REFLECTION (Plane mirrors). schoolphysics ::Welcome::. Retrieved October 22, 2013, from http://www.schoolphysics.co.uk/age1619/Optics/Reflection/text/Reflection_/index.html Specular vs. Diffuse Reflection. (n.d.). Specular vs. Diffuse Reflection. Retrieved October 18, 2013, from http://www.physicsclassroom.com/class/refln/
10. 10. Bibliography Cont. • • The Law of Reflection. (n.d.). The Law of Reflection. Retrieved October 21, 2013, from http://www.physicsclassroom.com/mmedia The Law of Reflection. (n.d.). The Law of Reflection. Retrieved October 22, 2013, from http://www.physicsclassroom.com/mmedia