2 How does light interact with matter? Light can interact 3 ways:1. reflected – light waves bounce of objects2. absorbed – light is taken in object (heated)3. transmitted – light passes through matter
3 Looking through a window all 3 interactions can be observed How?Seeing through glass (transmitted)Seeing your reflection in glass (reflected)Feeling the heat of the glass (absorbed)
4 Transparent, translucent, and opaque, what’s the difference? Transparent – allows light to pass through without interferenceEx. Clear glassTranslucent – transmits light but does not transmit an imageex. Frosted glassOpaque – no light transmitted, can not see throughex. Aluminum foil
5 How do we see colors?Our eyes detect wavelengths of light reflected off objectsWhite light is made up all colors of lightThe color of your shirt is the color that is being reflected not absorbed
6 What are the primary colors of light? Colors of light that when mixed together equally make white lightRed, Blue and Green lightMixing of primary colors can produce all other colors of light
7 What are the primary pigments of color? Colors of pigments that can make all other colorsCyan, Yellow, and MagentaUsed in printing along with black to make the colors of photographs
8 What is diffraction?Bending of waves around barriers or through openingsThe greatest amount of diffraction occurs when the barrier or opening is the same size or smaller than the wavelength
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