Sample Essay

The perception of light itself can be subjective. As Sir Isaac Newton told us, white light can be made to transform into various other colors of variable wavelength (Kusterer, 2007), some of which when mixed together result in other newer colors (Color Vision & Art). These colors, alongside transforming the world that we live in, tend to incite varying degrees of mood amongst humans and animals alike. While human perception of colors is somewhat subjective, some aspects of it can be said to have universal implications. The color red and others close to it such as orange and yellow are considered to be warm colors that incite feelings ranging from comfort and warmth to that of anger and hostility. Colors surrounding the blue end of the spectrum such as purple and green are observed to incite feelings of calmness, but may even resort to sadness or indifference depending upon the perceiver’s inclinations.

These ideologies are what the ancient civilizations purported to use in their Chromotherapy sessions, using colors to heal and effect a person’s mood in a positive way (Wagner) (Parker, 2001). Although some of the aforementioned ideologies may be generally accepted if perhaps still prone to skepticism at the hands of leading psychologists, it brings us to consider what exactly our eyes and its complementing visual system is designed to perceive, and its limitations. The anatomical details involved in the process include the photoreceptor mosaic on the retina, its sensitivity and properties of the object emitting the light.

The source could either be direct, such as from a light bulb, or reflected off of objects. The eye is designed to perceive that light where as the brain does the part of determining its origins and contrast it with an image. The multipurpose nature of the eye renders it in charge of refracting light through the cornea, control the amount of light entering the eye through the pupil, focus it to cast a picture on the retina and direct it via the optical nerve as electrical signals to the brain. Together this makes up the perception system of an individual, which has its own way of dealing with the varying degrees of light. The object of this paper is to discuss the changes the eye undergoes as dependent upon the light it perceives.

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