When Reflectance Spectrophotometry Is Used as an Analytic Method

question 25

Multiple Choice

When reflectance spectrophotometry is used as an analytic method:

• A) the light reflected from the surface of a colorimetric reaction is used to measure the amount of unknown colored product generated in the reaction.
• B) a beam of light is directed at a flat surface.
• C) the amount of light reflected is measured in a reflectance spectrophotometer.
• D) all of the above are correct.

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Definitions:

Sensory Adaptation

The method through which sensory detectors decrease in sensitivity towards unvarying or steady stimuli over a period.

Subliminal Sensation

A perceptual experience that occurs below the threshold of conscious awareness.

Context Effects

Refers to how the context or environment in which information is presented affects an individual's perception or understanding of that information.

Masking Stimuli

External stimuli that interfere with the perception of other stimuli, making them less likely to be noticed.