Cochlea a protein motor called prestin on their outer membranes; it generates additional movement that couples back to the fluid–membrane wave. This "active amplifier" is essential in the ear's ability to amplify weak sounds. The active amplifier also leads to the phenomenon of soundwave vibrations being emitted from the cochlea back into the ear canal through the middle ear (otoacoustic emissions). Otoacoustic emissions are due to a wave exiting the cochlea via the oval window, and propagating back through the middle ear to the eardrum, and out the ear canal, where it can be picked up by a microphone. Otoacoustic emissions
Fantastic Beasts and Where to Find Them (film) the film would be the start of a trilogy. In July 2016, David Yates confirmed that Rowling had written the screenplay for the second film and had ideas for the third. In October 2016, Rowling announced that the series would now comprise five films. The first sequel, titled "", was released on 16 November 2018. Fantastic Beasts and Where to Find Them (film) Fantastic Beasts and Where to Find Them is a 2016 fantasy film directed by David Yates. A joint British and American production, it is a spin-off and prequel to the "Harry Potter" film series, and is produced