Pressing one or more keys on the piano's keyboard causes a padded hammer (typically padded with firm felt) to strike the strings. The hammer rebounds from the strings, and the strings continue to vibrate at their resonant frequency.
Function of skin pigment. Melanin is a naturally produced polymer found in a multitude of locations in the body, from the eye and ear, to the brain and skin.Each different location contains a different variety of melanin, such as neuromelanin in the brain, and eumelanin and pheomelanin in the skin.The functions of most of the melanins found in biology are not fully understood, except for melanin found in the skin, known as eumelanin or pheomelanin.ach different location contains a different variety of melanin, such as neuromelanin in the brain, and eumelanin and pheomelanin in the skin. The functions of most of the melanins found in biology are not fully understood, except for melanin found in the skin, known as eumelanin or pheomelanin.
Melanocytes are melanin-producing cells located in the bottom layer (the stratum basale) of the skinâs epidermis, the middle layer of the eye (the uvea), the inner ear, meninges, bones, and heart. Melanin is a pigment that is responsible primarily for the color of skin. (wikipedia)