Rather than make the casing waterproof, Apple's patent describes a method of waterproofing internal components by integrating a hydrophobic coating with
the electromagnetic interference shields used to protect sensitive electronics.
Not exact matches
It also helps
shield the lines from outside
interference and, at the same time, confine the
electromagnetic waves flowing through them, almost completely eliminating current loss.
Aerospace and aircraft companies as well as the military have been challenged to find ways of effectively
shielding sensitive electronic equipment such as radar and radios from
electromagnetic interference (EMI) without adding a lot of weight to aircraft and satellites (the more massive they are, the more fuel they need to stay in the air or achieve orbit, respectively).