"Plane Mirror Imaging" Light Phenomenon PPT Courseware 7

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"Plane Mirror Imaging" Light Phenomenon PPT Courseware 7

1. Understanding plane mirrors

The surface is a flat, smooth reflective surface.

2. Performing glass cleaning

think:

1. What are the rules for the actions of teachers and students in the game?

2. Have the situations in the game ever appeared in life?

3. Observe yourself

1. Is the face in the image in the plane mirror the same size as yours?

2. When your face moves away from the plane mirror, does the distance from the image to the plane mirror change? Far away or close?

3. Blink your left eye and observe which eye you are blinking? Or close one eye (for example: left eye) and look in the mirror, and then observe which eye you closed in the mirror?

Analyze arguments and draw conclusions

Characteristics of plane mirror imaging:

1. The size of the image and the object are equal

2. The distance between the image and the object to the plane mirror is equal

3. The line connecting the object and the image is perpendicular to the plane mirror

4. The image formed by the plane mirror is a virtual image

5. The image is opposite to the left and right of the object

Exchange and cooperation

①Why use glass plate instead of plane mirror?

②How to determine the position of the image in the experiment?

③Why use two identical objects?

The principle of plane mirror imaging

1. How does the human eye determine objects?

2. How do human eyes see the image in a plane mirror?

Virtual image: It is not formed by the convergence of actual light rays, but is formed by the intersection of the reverse extension lines of reflected light rays.

Virtual image: An image formed by the convergence of reverse extension lines of light.

Real image: An image that can be displayed on a light screen.

The virtual image can be observed with the eyes, but cannot be received by the light screen. The virtual image is represented by a dotted line when drawing.

The image formed behind a plane mirror is a virtual image

Optimize training

1. Complete the optimization training exercises and present and explain them in groups

2. Summarize what you have learned in this lesson.

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Update Time: 2024-09-26

This template belongs to Physics courseware People's Education Edition Physics for Grade 8, Volume 1 industry PPT template

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