# Light Interactions- Waves unit

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Information about Light Interactions- Waves unit
Education

Published on March 3, 2014

Author: ToddBloch

Source: slideshare.net

## Description

Light Interactions for waves unit: Reflection, refraction, Diffusion, Interference and covers how we see colors.

Light Interactions WWMS 7th Grade Science

Law of Reflection • The angle of incident equals the angle of reflection

Regular Reflection • When light is reflected of off a smooth surface. • Your eyes will see a reflection on the surface.

Diffused Reflection • The reflection of light from an uneven surface. • Your eyes will not see a reflection on the surface

Refraction • The bending of light as it goes through a different medium and changes speeds.

Diffraction • The bending of light around barriers • The colors on the spider web are due to the diffraction of light.

Light Interference • The iridescence of the Peacock’s feathers is caused by light interference from many layers of reflected light.

3-Types of light interactions with matter • As light passes through this window it can be: 1. Absorbed- soaked up 2. Transmitted- pass through 3. Reflected- bounce off

3 Types of Matter 1. Transparent- light is transmitted in strait lines 2. Translucent- light is transmitted in scattered patterns 3. Opaque- all the light is absorbed.

Color Addition • The 3 primary colors of light are: 1. Red 2. Green 3. Blue When combined they form white.

Color Subtraction • The primary pigment colors are: 1. Magenta 2. Cyan 3. Yellow • • They can combine to produce any other color. When mixed they create black

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