[post_page_title]Airplane windows[/post_page_title]
Anyone who has been on an airplane, has probably noticed (perhaps with some alarm) there is a small hole in the airplane window. Why is that? The tiny hole at the bottom of the window is actually not dangerous at all, and has two purposes.
First and most importantly, it allows the ventilation needed for the windows not to break from the massive pressure that exists at high altitudes. The second reason is preventing the windows from fogging up.
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