Final Exam Flashcards
metamerism
two colors match if they have the same tristimulus values for a given illuminant and observers
Visible spectrum
400-700 nm
White light
all colors/wavelengths combined
wave
disturbances of particles, the passage of light, heat, sound etc
particles
tiny balls/pieces that make up photons, that make up light
refraction
bending of a wave, shorter wavelengths refract more
reflection
incident light/wavelengths go back at the same angle it hit
absorption
wavelength energy is taken into object
transmission
light/wavelength goes THROUGH the object (transparency may occur)
photon
particles that light is made of
radiant flux
radiant energy emitted, reflected, transmitted (by and object) per unit of time
λ
the length of a wavelength, distance between 2 peaks or valleys
wavelength and frequency (energy) relationship
inverse
reflectance factor curve
shows what wavelengths/colors bounce back from object in a graph
blackbody
the most efficient absorber and best light source (emits over wide energy band)
law of reflection
angle of incidence = angle of reflection
scattering
when light bounces off particles in many directions (creates color of the sky)
The Eye
cornea > pupil > lens > retina > fovea > optic nerve > brain
cones
for color, see RGB, mostly located in fovea, makes humans trichromats
colorblindness
just color deficient, effects men more often than women
rods
see in lowlight, there are more than cones
3 things needed to classify color
hue, saturation, lightness
hue
traditional color name of wavelength
saturation
purity of the color
lightness/brightness/value
lightness or darkness in a color
Additive System
RGB
Subtractive System
CMYK
Ostwald System
Review in old deck
