Taking a selfie can blind a pilot for nearly half a second
High-altitude maneuvers can compress a pilot's vision into a narrow tunnel, turning a momentary glance at a phone into a total sensory blackout.
When a South Korean pilot attempted to capture a mid-air photo during a high-speed maneuver, the physical strain of the turn had already primed his brain for a blackout. At high gravitational forces, blood drains from the head, causing 'tunnel vision' that can narrow a pilot's field of view by forty degrees. In this diminished state, the human brain needs every millisecond to process spatial orientation.
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