Images in Plane Mirrors. Monday, May 23, 16

Transcription

1 Images in Plane Mirrors

2 Reflection: Light bouncing off of an object and entering our eye.

3

4 You can use light rays and the laws of reflection to show how a plane mirror produces a virtual image and where it is located.

5 Normal - the perpendicular line to the mirror surface Incident Ray - the original incoming ray Angle of Incidence - the angle between the incident ray and the normal Reflected Ray - the ray that bounces off a reflective surface

6 The Laws of Reflection 1. The Angle of Incidence equals the Angle of Reflection 2. The incident rays, the reflected ray and the normal all lie in the same plane

7 Specular reflection - reflection of light off a smooth surface Diffuse reflection - reflection of light off an irregular or dull surface

8 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

9 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

10 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

11 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

12 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

13 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

14 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

15 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

16 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

17 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

18 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

19 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

20 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

21 Draw the light rays behind the mirror as dashes because the light rays do not really exist.

22 Images in Plane Mirrors So, why is the word ambulance written backwards on the vehicle?

23 Images in Plane Mirrors So you can read the word when you look at it in the rear view mirror

24 What is an Image? A copy of an object through the use of light

25 Four characteristics of an image Four characteristics of an image (S.A.L.T.): 1.Size - The size of the image seen compared to the original object. (e.g., bigger, smaller, same)

26 Four characteristics of an image 2. Attitude - Orientation of the image seen compared to the original object. (e.g., upright, inverted)

27 Four characteristics of an image 3. Location (e.g., front of mirror, behind mirror, and how far from mirror)

28 Four characteristics of an image 4. Type (e.g., real or virtual)

29 Types of Images Real image an image that is formed when reflected rays meet can be seen on a screen due to light rays arriving at the image location (e.g., movie screen)

30 Types of Images Virtual image an image formed by rays that appear to be coming from a certain position, but are not actually coming from this position imagined cannot form a visible projection on screen (e.g., plane mirror)