PSYC 2390 Chapter 3: Chapter 3
15 Feb 2012
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Document Summary
A band of energy within the electromagnetic spectrum. A continuum of electromagnetic energy that is produced by electrical charges and is radiated as waves. Vision begins when visible light is reflected from objects into the eye. Light reflected from stimuli in the environment enters the eye through the pupil and is focused by the cornea and lens to form sharp images of the object on the retina, which contains the receptors for vision. The distance between the peaks of the electromagnetic waves. Wavelengths range from extremely short gamma rays (about 1/10 000 000 000 m) to extremely long radio waves (10 000 m) The wavelength of visible light is associated with the different colours of the spectrum: rods, cones. Light-sensitive chemicals in the visual receptors that react to light and trigger electrical signals. The electrical signals (triggered by visual pigments) flow through the network of neurons that make up the retina.
