The windows of airplanes are not like other vehicle's windows.
They are round in shape.
These are the reasons - - -
1. Strength
Round windows are stronger than square ones. They resist pressure and stress better.
2. Pressure distribution
Round windows distribute pressure evenly, reducing cracks and breaks especially in high altitudes.
3. Decentralization
Round windows have rounded edges to prevent injuries by minimising the risk from sharp edges.
4. Round windows are used to address the problem of metal fatigue failure by square windows.
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