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Images in Plane Mirrors Monday, May 23, 16

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Page 1: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

Monday, May 23, 16

Page 2: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 3: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Monday, May 23, 16

Page 4: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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.

Monday, May 23, 16

Page 5: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

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

Monday, May 23, 16

Page 6: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

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

Monday, May 23, 16

Page 7: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Specular reflection - reflection of light off a smooth surface

Diffuse reflection - reflection of light off an irregular or dull surface

Monday, May 23, 16

Page 8: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 9: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 10: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 11: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 12: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 13: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 14: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 15: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 16: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 17: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 18: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 19: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 20: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 21: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

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

Monday, May 23, 16

Page 22: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane

MirrorsSo, why is the word ambulance written

backwards on the vehicle?

Monday, May 23, 16

Page 23: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane

MirrorsSo you can read the word when you look at it in the

rear view mirror

Monday, May 23, 16

Page 24: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Images in Plane Mirrors

What is an Image?

A copy of an object through the use of light

Monday, May 23, 16

Page 25: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

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)

Monday, May 23, 16

Page 26: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Four characteristics of an image

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

Monday, May 23, 16

Page 27: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Four characteristics of an image

3. Location (e.g., front of mirror, behind mirror, and how far from mirror)

Monday, May 23, 16

Page 28: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Four characteristics of an image

4. Type (e.g., real or virtual)

Monday, May 23, 16

Page 29: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

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)

Monday, May 23, 16

Page 30: Images in Plane Mirrors · 2019. 10. 28. · Images in Plane Mirrors Reflection: Light bouncing off of an object and entering our eye. Monday, May 23, 16. Monday, May 23, 16. Images

Types of ImagesVirtual image –an image formed by rays that appear to be coming from a certain position, but are not actually coming from this position

imaginedcannot form a visible projection on screen (e.g., plane mirror)

Monday, May 23, 16