| Category | Format | Size |
|---|---|---|
| Shanghai Science Edition 8th Grade Physics | pptx | 6 MB |
"Refraction of Light" colorful light PPT courseware
Description
"Refraction of Light" colorful light PPT courseware
The phenomenon in which the direction of propagation of light changes when it passes from one medium into another is called refraction of light.
What is the law of reflection?
What are the laws of refraction?
Are the laws of refraction and reflection the same?
When light is reflected, the reflected ray, incident ray and normal are in the same plane;
Reflected rays and incident rays are located on both sides of the normal;
The angle of reflection is equal to the angle of incidence.
Will the laws of refraction and reflection be the same?
When light is reflected, the reflected ray, incident ray and normal are in the same plane;
Reflected rays and incident rays are located on both sides of the normal;
The angle of reflection is equal to the angle of incidence.
Laws of refraction of light
1. The refracted ray is on the same plane as the incident ray and the normal; and the refracted ray and the incident ray are always separated on both sides of the normal.
2. When the angle of incidence increases, the angle of refraction also increases.
3. When light shines obliquely from air into water (or other transparent media), the refraction angle is smaller than the incident angle; when light shines from water (or other transparent media) into air, the refraction angle is larger than the incident angle.
4. When vertically irradiated, the propagation direction remains unchanged.
Class quiz
1. The water in the pool looks ____ than it actually is. This is caused by the _______ that occurs when light enters _________ from _________. What you see is a ______ image of the actual bottom of the pool.
2. As shown in the figure, it is the route of light propagation in the two media of air and glass, where ________ is the incident light, ________ is the reflected light, ________ is the refracted light, the reflection angle is ________, and the refraction angle is ________ , the deflection angle of light after entering the glass is ________.
3. As shown in the figure, OB is the reflected ray of light from the air to the water surface. Draw the incident ray in the figure, mark the degree of the incident angle, and draw the general direction of the refracted ray.
4. Watching "fish swimming in the clouds" in the calm water by the lake, then ( )
A. "Fish" is a virtual image formed by the reflection of light, and "cloud" is a virtual image formed by the refraction of light.
B． "Fish" is a virtual image formed by the refraction of light, and "cloud" is a virtual image formed by the reflection of light.
C. “Fish” and “clouds” are both virtual images formed by the reflection of light
D． “Fish” and “clouds” are both virtual images formed by the refraction of light.
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For more information about the "Colorful Light Refraction of Light" PPT courseware, please click the "Colorful Light ppt Refraction of Light ppt" tag.
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Update Time: 2024-07-01
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