Lec5 - Interaction of light and matter Any object or surface receiving light absorbs part of it α reflects part of it ρ may transmit part

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Unformatted text preview: Interaction of light and matter Any object or surface receiving light ¡ absorbs part of it: α [ %] ¡ reflects part of it: ρ [ %] ¡ may transmit part of it: τ [ %] α + ρ + τ = 100% reflection transmission absorption Interaction of light and matter Absorption ¡ general ¡ selective Interaction of light and matter Absorption Reflection Interaction of light and matter Absorption Reflection ¡ specular i = r Figures by MIT OCW. C O N C AV E C O N V E X T T i r A A C F f C φ φ F i r C f i r Interaction of light and matter Absorption Reflection ¡ specular ¡ spread ¡ diffuse ¡ compound Specular Diffuse/Specular Specular/Spread Diffuse/Spread Spread Diffuse Figure by MIT OCW. Interaction of light and matter Absorption Reflection Anodised aluminium White paint Plaster / white coating (new) Brushed aluminium Worn white coating White acoustical panels White tiling Light birch, ash, maple Pinewood (new) Ecru loth New concrete / light wood fiber (worn) Mahogany, walnut Light grey carpet Earthenware tiling, oak floor (worn)...
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This note was uploaded on 12/05/2009 for the course COA 4403 taught by Professor Test during the Spring '09 term at Georgia Institute of Technology.

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Lec5 - Interaction of light and matter Any object or surface receiving light absorbs part of it α reflects part of it ρ may transmit part

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