Luminance Is Determined by Measuring the Concentration of Light

question 13

Multiple Choice

Luminance is determined by measuring the concentration of light:

• A)at only one particular point of the field of view.
• B)over a particular field of view.
• C)at only one particular point of the field of view and then squaring the number.
• D)over a particular field of view and then squaring the number.

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Definitions:

Jnd

Stands for Just Noticeable Difference, the minimal change in a stimulus that can just barely be detected by an organism.

Weber Fraction

A concept in psychophysics that describes the proportionate relationship between the magnitude of a physical stimulus and its perceptible increment needed to detect a difference.

Psychological Magnitude

The perceived size, intensity, or importance of a psychological process or stimulus, often related to how individuals assess and experience various psychological phenomena.

Physical Intensity

The magnitude or strength of a physical quantity or phenomena, such as light, sound, or exercise.