LIGHT, COLOR, AND WAVE INTERACTION.

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Presentation transcript:

LIGHT, COLOR, AND WAVE INTERACTION

Properties of Light When light strikes an object it is:

Properties of Light When light strikes an object it is: Reflected

Properties of Light When light strikes an object it is: Reflected Transmitted

Properties of Light When light strikes an object it is: Reflected Transmitted Absorbed

Properties of Light What happens to the light depends on the material of the object it strikes:

Properties of Light What happens to the light depends on the material of the object it strikes: Transparent (clear) materials- transmit light

Properties of Light What happens to the light depends on the material Transparent (clear) materials- transmits light Translucent (see through) materials- scatters the transmitted light

Properties of Light What happens to the light depends on the material Transparent (clear) materials- transmit light Translucent (see through) materials- scatters the transmitted light Opaque (not see through) materials- absorbs and reflects

What Happens to the Light?

How Would You Classify These?

Properties of Light 1. The color of an opaque object is the color of the light it reflects! Example- An orange is orange because it absorbs every color BUT orange; instead it reflects orange!

Properties of Light The color of an opaque object is the color of the light it reflects! What would happen if you attempted to shine a red light on objects that were not red?

They would appear black! Properties of Light They would appear black!

Properties of Light 2. The color of a transparent or translucent object is the color of the light it transmits! Example- A red filter transmits red light so the stop sign appears red!

Properties of Light The color of a transparent or translucent object is the color of the light it transmits! What would happen if the red filter was not in front of a red object?

Properties of Light The object would appear black!

Combining Colors

Color Color is the perceptual quality of light. The human eye can distinguish almost ten million colors.

Mixing Colors of Light http://photographycourse.net/wp-content/uploads/2008/03/rgb_illumination-300x225.jpg

Primary Colors of Light: Red, Green, Blue - produce white light when combined in equal amounts

Secondary Colors of Light: Cyan, Magenta, and Yellow - also combine to produce white light.

Complementary colors are any two colors that combine to form white light. Every secondary color is the complement of a primary color.

Complementary Colors Yellow + Blue = White Light Cyan + Red = White Light Magenta + Green = White Light

Mixing Pigments Cyan, Yellow, and Magenta combine to give Black color pigment

Mixing Pigments As pigments are added together, fewer colors of light are reflected and more absorbed. The more pigments that are combined the darker the pigment looks.

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