RA 2 Color Flashcards
- Color is a property of ___, without it, color does not exist
- ___light is a mixture of light rays of all colors.
- ___has no color of its own but has the ability to absorb certain rays and reflect others that are responsible for the pigment’s characteristic color.
- If all wavelengths of light are absorbed, we see ___object,
- If all are reflected, we see a ___object.
- Color is determined by the color of the light waves ___(not absorbed).
light
White
Pigment
black
white
reflected
lens refracts light to converge on the retina. Nerves transmit the image.
Retina:
the long rod-shaped sensory bodies of the retina of the eye responsive to light but not color. Nerve cells in the retina. Very sensitive to light & dark.
Rods of the eye:
sensory nerves in the retina of the eye having to do with color detection. Nerve cells help to see light/color.
Cones on the eye:
Where does color come from?
Colors are defined as a visual sensation. It is the response of the light of specific wave length or radiant energy which strikes the retina of the closed eye. The eye then transmits the impulses to the brain. The rods and cones of the retina are the structures of the eye responsible for distinguishing color preceptor.
When a beam of sunlight is passed through a prism, it is broken down into 7 individual colors called a ___as it exits o the opposite side of the prism.
spectrum
The colors of the spectrum can be recalled by
R.O.Y. G. B.I.V (red, orange, yellow, green, blue, indigo and violet). Indigo is also called purple.
the progressive arrangement of colors (ROY G BIV) when a beam of light is broken down into component colors. We perceive color due to the absorption or reflection of light off the objects we are looking at.
Spectrum:
colored object absorbs rays of light which illuminate it while others are reflected
Absorption:
return of light from a surface
Reflection:
• The breaking up of white light (sunlight) into its many colors is called ___ and was discovered by Isaac Newton.
dispersion
adding 2 or more colored lights together to create another color of light.
Additive Color/Method:
process of mixing colored lights on a surface in which the wavelengths of each are combined;
•These are the color obtained by emitted light
•Associated with television and computer displays
Additive Color/Method:
The breaking up of white light (sunlight) into its many colors
Dispersion:
return of light waves from surfaces, the bending or folding back of a part upon itself.
Reflection:
Ability of objects to selectively reflect some of the color rays of the visible spectrum.
Reflection:
An object appears blue because it reflects blue light waves. When all the light waves are reflected, we see white.
When additive primary colors (Red + Blue + Green) are combined they produce ___
white
process of taking in, as in a colored object which absorbs certain rays of light and reflects other rays giving the object its recognizable color.
Absorption
an apple is called red if the red rays are reflected and the other rays in the light are absorbed
refers to absorbing the light waves. When all the light waves are absorbed (and none are reflected) we see black.
Absorption
•Substances that can be ground into fine powder and used for adding color to dyes and paints
•Originally derives from animal, mineral, and vegetable sources Example:
o Purple from shellfish
o Red dye from the dried bodies of scale insects
Pigments
- Circle in which primary, secondary, and intermediate hues are arranged in orderly intervals
- Basic tool we used when working with pigmentary colors
The Color Wheel (Prang System)
___ hues in the spectrum of color
12
can be combined to make all other hues. All colors originate from these 3 hues. Cannot be produced by mixture of other hues.
3 Primary Hues
Red, Yellow, Blue
Mixture of 3 primary hues (Red, Yellow, Blue) in equal amounts produces ___
gray
