Once the sound waves travel into the ear canal, they vibrate the tympanic membrane, commonly called the eardrum. The eardrum is a thin, cone-shaped piece of skin, about 10 millimeters (0.4 inches) wide.It is positioned between the ear canal and the middle ear.The middle ear is connected to the throat via the eustachian tube. Since air from the atmosphere flows in from your outer ear as well as your mouth, the air pressure on both sides of the eardrum remains equal.his pulls the eardrum and the connected bones in two different directions, so the drum becomes more rigid. When this happens, the ear does not pick up as much noise at the low end of the audible spectrum, so the loud noise is dampened.
Recommendation letters are usually specifically requested to be written about someone, and are therefore addressed to a particular requester (such as a new employer, university admissions officer, etc.), although they may also be issued to the person being recommended without specifying an addressee.
Definition of 'recommend'. recommend (rekÉmend ) If someone recommends a person or thing to you, they suggest that you would find that person or thing good or useful. I have just spent a holiday there and would recommend it to anyone. 'You're a good worker, boy,' he told him. 'I'll recommend you for a promotion.'.