The Fluid Filled Cochlea. The pressure changes in the cochlea caused by sound entering the ear travel down the fluid filled tympanic and vestibular canals which are filled with a fluid called perilymph.
Those who love the size of the original iPad Mini 1 will be pleased to find that the size remains unchanged. Both the iPad Mini 1 and the iPad Mini 2 both measure in with a height of 7.87 inches and a width of 5.3 inches. The iPad Mini has only a slight difference in depth, while it weighs slightly more. However, it is still lightweight enough for anyone who wants a small and portable tablet.
The iPad was first introduced in January 2010 and made its debut in April 2010. Since the original announcement, there have been 5 additional iPad generations, a new Mini series of 7.9-inch iPad tablets, and most recently, a 12.9-inch iPad Pro and its smaller 9.7-inch counterpart.