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.
SIM Sizes. There are three sizes for SIM cards: the standard SIM card, the micro-SIM and the nano-SIM. The first through fourth generations of the iPad use the micro-SIM cards, while the iPad Mini uses the nano-SIM. You can trim a standard SIM card down to fit these standards -- Sharon Vaknin of CNET offers a tutorial on how to do this -- but if you do it incorrectly, you damage the SIM card irreparably.