Echo and Narcissus (Waterhouse painting) mythology. In Ovid's version of the myth, Narcissus was the son of the river god Cephissus and the nymph Liriope. His parents were told that he would live to an old age if he did not look at himself. He rejected all the nymphs and women who fell in love with him. One of these was the nymph Echo, who was so upset by her rejection that she withdrew from life and wasted away until all that was left was a whisper. Her prayers were heard by the goddess Nemesis who caused Narcissus to fall in love with his own
Echo Greek is a mountain nymph whose ability to speak was cursed, only able to repeat the last words anyone spoke to her. Some animals use echo for location sensing and navigation, such as cetaceans (dolphins and whales) and bats. Acoustic waves are reflected by walls or other hard surfaces, such as mountains and privacy fences. The reason of reflection may be explained as a discontinuity in the propagation medium. This can be heard when the reflection returns with sufficient magnitude and delay to be perceived distinctly. When sound, or the echo itself, is reflected multiple times from multiple surfaces, the