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You’re sitting by the window, excited for take-off, and as the plane rises, all you can see is a small patch of the sky through that tiny round window. You may have wondered, “Why are airplane windows always so small and round? Why can’t they be bigger and square like at home?” Well, there’s an important reason behind it, and it’s all about keeping you safe in the sky.

Why Airplane Windows Are So Small?

Airplanes fly very high, much higher than the tallest mountains. At that height, the air outside is super thin and cold, so the inside of the plane has to be pressurised to keep passengers comfortable and safe. Now, if the windows were big, they would make the body of the plane weaker. The air pressure inside could push too hard against the large glass, increasing the chances of cracks or leaks. Smaller windows are stronger, easier to seal, and much safer. They also help the airplane move more smoothly through the air.

Why Are They Round, Not Square?

Long ago, airplane windows used to be square. But after a few accidents in the 1950s, engineers discovered that square corners collect too much pressure and stress. That made them crack more easily. Round or oval windows spread out the pressure evenly. This design makes the plane safer and reduces the risk of cracks. That’s why modern airplanes use rounded windows; they’re built to handle the pressure.

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Most Asked Questions About Airplane Windows

Question 1: Can airplane windows crack or break mid-flight?

Answer: Yes, cracks can happen, but don’t worry. Airplane windows are made in layers. Even if one layer cracks, the others keep everyone safe. Complete breakage is extremely rare.

Question 2: Why are plane windows so tiny?

Answer: They’re small to keep the plane strong. Tiny windows reduce pressure stress and make the plane safer at high altitudes.

Question 3: Why can't planes have square windows?

Answer: Square windows have sharp corners where pressure builds up. That can cause cracks. Round windows spread the pressure better and help prevent any damage.

Question 4: Why don’t airplane windows open?

Answer: Plane windows can’t open because the air pressure and temperature outside are dangerous. Closed windows keep the inside safe and comfy for everyone.

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So the next time you sit beside that little round window, remember, it may be small, but it plays a big role in keeping your flight safe. In the sky, safety matters more than the size of the view.