piece of writing, written material, writing - the work of a writer; anything expressed in letters of the alphabet (especially when considered from the point of view of style and effect); the writing in her novels is excellent; that editorial was a fine piece of writing.
The Senses. Researchers have studied vision more thoroughly than the other senses. Because people need sight to perform most daily activities, the sense of sight has evolved to be highly sophisticated. Vision, however, would not exist without the presence of light. Light is electromagnetic radiation that travels in the form of waves. Light is emitted from the sun, stars, fire, and lightbulbs. Most other objects just reflect light. People experience light as having three features: color, brightness, and saturation.
1. Using appropriate examples, identify the various factors that can make perceptual experiences subjective. 1  Color vision, such as our experience of the sky being blue, is a phenomena constructed from the joint action of the properties of the stimulus (light), and sensory and perceptual processes within us. Perception involves making guesses about what a pattern of sensory stimulation most likely is.