Color Spectrum What we see determines what is


















- Slides: 18
Color Spectrum What we see determines what is interpreted Isaac Newton first to study using , showed sunlight is made of
Spectrum spread of (low freq -> high freq) White light white objects appear and colored objects appear all colors combine to black is the ; it all visible frequencies black objects all light otherwise you couldn’t see them; some light
Color by Reflection Color of Light is objects due (like a tuning fork) once excited to vigorous motion, send out their directions in all
Different materials have different natural frequencies for absorbing and emitting radiation resonant frequencies , light is frequencies below , light is reemited light materials light medium which it came if =
Most of some the rest e. g. if an object light frequencies and If an object it will be the If a material on it, it and most visible green, light of as the light that ,
NOTE: an object can present in the illuminating light The perceived color of an object is depends on Best light to determine color =
Color by Transmission Color of depends on the color of the Material in glass that colored light = Electrons in pigment atoms of certain frequencies Light of other frequencies in the glass Energy is , glass
Mixing Colored LIGHT White light comes from ALSO comes from mixing just Divided into three regions: freq ( ), freq ( ) Combinations red & green = red & blue = green & blue = ),
Complementary Colors When two colors are yellow + + green + Not all the ; some part that is i. e. , reflects upon an object is is from on pigment that absorbs
Fig 28. 10 Lighting objects with shadow of object will light it is Objects will not primary color of
Pigments Mixing and is ENTIRELY different from pigments reflect a Color mixing by is used with pigments in and mixed absorbs all colors except Color mixing by is used in primary colors
Why the sky is blue Atoms and molecules behave like and waves , the frequency of light it will sent in Most UV light by Some UV light and is by particles and molecules in scattered the most BUT our eyes ; our eyes we see a
Increased allows sky is after rains, sky appears White and other to , and sky is when there are clouds produced by combination of waves caused by
Why Sunsets are Red When light passes thru thick atmosphere, light of while light of @ sunset, light reaches us thru more remains in sunlight Sun gets
Water a pale to nearly all Absorbs and resonates Resonate somewhat to Red taken from = of red light
Atomic Spectra Spectroscope All analyzes elements The and of light can be analyzed on a Combination and magnitude found on line spectrum Each element has =