At CES 2017, Samsung has unveiled a new line of TVs under the QLED umbrella. These are LCD TVs with quantum dot technology. The flagship Q9 is flat, whereas the Q8 is curved. Samsung wants to sell its 2017 LCD TVs as QLED TVs, just like it sold LCD TVs in 2015 and 2016 under the SUHD brand, and under LED before that. Originally, QLED referred to a new type of self-emitting display technology like OLED.
URL of this page: //medlineplus.gov/ency/imagepages/8993.htm. The tympanic membrane is also called the eardrum. It separates the outer ear from the middle ear. When soundwaves reach the tympanic membrane they cause it to vibrate. The vibrations are then transferred to the tiny bones in the middle ear. The middle ear bones then transfer the vibrating signals to the inner ear.
An eardrum perforation is a hole or opening in an otherwise intact eardrum. The size of the perforation can vary from a small pinpoint opening to a loss of the entire eardrum. How does a perforation of the eardrum occur? There are many ways an eardrum perforation can occur. An infection behind the eardrum in the middle ear may cause a rupture of the eardrum. Trauma to the ear may result from an object entering the ear canal and puncturing the eardrum. A traumatic blow to the ear with a cupped hand can rupture the eardrum. Hot welding slag can burn a hole through the eardrum.