Also referred to as a “bleed” or “breather hole”, those tiny holes at the bottom of the airplane windows parts actually have a purpose. Airplane windows are thicker and stronger than they may appear, and for a good reason.
In order to keep airplane cabins windows relatively comfortable, a pressurized atmosphere allows for proper breathing and comfortable temperature. What makes this possible while still being able to watch the skies around you is a three-layered window, made to equalize the low pressure outside and the high pressure inside.
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