Ear...

How they work?

Ear connects sound waves and pass information about them to the brain.The bigger the ears the more sound energy they can connect.The inner ear mechanism also helps maintain balance and the orientation of the head.We tend to think that sounds we can hear are the only sound that exist.But a dog or horse's ears may pick up when we hear nothing though ear are sensitive,but they cannot hear all the sounds that come through the air.Our ears have a limited ability to detect sounds.A typical person can hear sounds from about 20Hz to 20,000Hz.Sound with frequencies lower than 20Hz do not simulate the ear;so we are unaware of them.Yet they do exist and some animals may be able to detect them.