PHThere's a purpose to those tiny pinholes in airplane windows
Those You do not have permission to view the full content of this post. Log in or register now. are called "breather" or "bleed" holes. Airplane windows have multiple panes, with the breather hole being in the middle to equilibrate between the cabin window and the outside windowpanes—it helps alleviate pressure so that neither the outside nor inside panes cràck.
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