Posted on Leave a comment

Human Ability to Hear Sound

The sound of a sewing needle falling on a table is so slight that the vibrations may move your eardrums less than the width of a molecule. Yet in a quiet room, you can hear it. The amount of energy reaching your ears has been estimated at less than a millionth of a billionth of a watt.

Leave a Reply

Your email address will not be published. Required fields are marked *