"Reflection of Light" Colorful Light PPT Courseware 3

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"Reflection of Light" Colorful Light PPT Courseware 3

1. Light reflection phenomenon

All the objects we see in our lives enter our eyes because of the reflected light from their surfaces.

Polished metal and well-painted objects look bright and dazzling.

Bricks and stones look dim.

These phenomena are due to the fact that different surfaces reflect light differently.

The reflection phenomenon of light - reflection

reflection of sun

mountain reflection(1)

Mountain reflection(2)

2. The law of reflection of light

The law of reflection:

The reflected ray is in the same plane as the incident ray and normal;

Reflected rays and incident rays are separated on both sides of the normal;

The angle of reflection is equal to the angle of incidence.

3. The light path is reversible when light is reflected

The light emitted from point A reaches point B after being reflected by point O. Place another light source at point B so that the light emitted is directed to a certain point on the mirror surface such as point C. Adjust the direction of light BC so that it coincides with BO and find that it The reflected light coincides with OA, thus indicating that the reflected light path is reversible.

4. Specular reflection and diffuse reflection

reflection of mirror

diffuse reflection

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Update Time: 2024-10-26

This template belongs to Physics courseware Shanghai Science Edition 8th Grade Physics industry PPT template

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