Optics Flashcards
What is the visible spectrum?
The range of wavelengths of light that can be seen by the human eye, typically from about 380 nm to 750 nm.
True or False: Humans can perceive all wavelengths of light.
False
Fill in the blank: The primary colors of light are ______, ______, and ______.
red, green, blue
What do we call colors that are created by mixing primary colors?
Secondary colors
Which color is perceived when red and green light are mixed?
Yellow
What is the phenomenon called when colors are perceived differently under varying lighting conditions?
Color constancy
What is the role of cones in human vision?
Cones are photoreceptor cells in the retina that detect color.
True or False: There are three types of cones in the human eye.
True
What are the three types of cones responsible for detecting?
Short (blue), medium (green), and long (red) wavelengths.
What is color blindness?
A condition where an individual has difficulty distinguishing certain colors.
Which type of color blindness is most common?
Red-green color blindness
Fill in the blank: The theory that explains how colors are perceived in terms of opposing pairs is called the ______ theory.
Opponent-process
What is the additive color model?
A model that describes how colors are created by combining light of different colors.
What is the subtractive color model?
A model that describes how colors are produced by mixing pigments or dyes.
True or False: The color wheel is a tool used to understand color relationships.
True
What are complementary colors?
Colors that are opposite each other on the color wheel.
What effect does saturation have on color perception?
Saturation refers to the intensity or purity of a color; higher saturation means more vivid colors.
What is the difference between hue and shade?
Hue refers to the color itself, while shade refers to a color mixed with black.
Fill in the blank: The brightness of a color is referred to as its ______.
value
What is the significance of color temperature in lighting?
Color temperature affects the appearance of colors in a scene, influencing mood and perception.
What is the psychological effect of the color blue?
Blue is often associated with calmness and serenity.
Which color is commonly associated with danger?
Red
What is the term for colors that are next to each other on the color wheel?
Analogous colors
What is the role of rods in human vision?
Rods are photoreceptor cells that detect light intensity and are responsible for vision in low light.
True or False: The human eye has more cones than rods.
False
What is the concept of color harmony?
The pleasing arrangement of colors that work well together.
What is the impact of cultural differences on color perception?
Cultural contexts can influence the meanings and emotions associated with different colors.
What is the term for the ability to identify colors in different lighting?
Color discrimination
What is a color wheel?
A circular diagram that shows the relationships between colors.
Fill in the blank: The phenomenon where colors appear differently based on surrounding colors is known as ______.
Simultaneous contrast
What is the definition of chromaticity?
The quality of a color that covers its hue and saturation.
True or False: Warm colors tend to evoke feelings of warmth and comfort.
True
What is the significance of color in branding?
Colors can influence consumer perception and emotional response to a brand.
What is the psychological effect of the color green?
Green is often associated with nature, growth, and tranquility.
What does the term ‘color theory’ refer to?
The study of how colors interact, combine, and the effects they have on human emotions and perceptions.
