Do you know why airplane windows are round?

Have you ever wondered why airplane windows are small and round? It's not just for aesthetics. There are several reasons behind this.

Before the 1950s, airplane windows were square. However, they were later changed to round. There are specific reasons for this.

Round windows help keep the aircraft safe and strong. The round window reduces stress while the plane is in flight.

A round-shaped window is less likely to break. This is very important when the plane is flying at high altitude.

If the windows are square, more pressure is applied to their sharp corners. This causes the glass to break. This happened in three accidents between 1953 and 1954.