Light Travels in the Form of Waves, and These Waves

question 296

Essay

Light travels in the form of waves, and these waves affect three aspects of our visual world. Describe, in detail, the three physical characteristics of light waves, and how each affects a specific psychological dimension of our visual experience.

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Definitions:

Facial Expression

The movement of the facial muscles to convey emotions and communicate nonverbally.

Facial Nerve

The seventh cranial nerve that controls the muscles of facial expression, taste sensations from the anterior two-thirds of the tongue, and the secretion of saliva and tears.

Vagus

Referring to the tenth cranial nerve (vagus nerve), which is part of the parasympathetic nervous system and controls functions of the heart, lungs, and digestive tract.

Ptosis

Falling down of an organ—for example, the drooping of the upper eyelid.