ABSTRACT
All living and nonliving bodies in our environment radiate and reflect energy. Sometimes we can sense this energy. We have evolved eyes to specially sense the visible spectrum. Our skin can sense some frequencies in the infrared (IR) spectrum and, although we aren’t highly conscious of ultraviolet (UV) radiation, our skin will respond to exposure to UV rays by getting sunburned. We have evolved senses that help us detect situations that might be useful or harmful to us, in which we can locate food or mates, or in which we might be burned or otherwise injured. For the most part, we are equipped to detect levels or kinds of energy that have a direct impact on normal day-to-day life.
