Memorial Health System As one of the leading healthcare organizations in Illinois, Memorial Health System of Springfield is a community-based, not-for-profit corporation dedicated to safety and quality in patient care, education and research.
hear definition: The definition of hear is to perceive a sound with your ears, or is being told or learning about something. (verb) An example of hear is when a bell rings and you are aware of it. An example of hear is when you learn through list...
Sound is a vibration that is transmitted in a medium (e.g. air), that can be heard by an human ear. If you were an ant or a bird, the meaning of sound would be different. Sound specifically refers to what the human ear can hear. All vibrations, including sound, have a frequency.