Examlex
A mineral is defined as a crystalline solid that is naturally occurring, has a specific chemical composition and forms through geologic processes.
ΔI
Signifies a change in a variable, commonly used in mathematics and physics to denote a change in intensity or other measurable factors.
Standard Stimulus
A specific, unchanging stimulus used as a basis for comparison in experimental investigations.
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.
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