ELI5: Explain Like I'm 5

Bouncing bomb

Imagine you want to drop a ball into a basket but the basket has a lid, and the ball needs to bounce on the lid to get into the basket. That's kind of what a bouncing bomb is like.

A bouncing bomb is a special type of bomb that bounces on the water before it explodes. It was invented during World War II by a British engineer named Barnes Wallis. The idea was to create a bomb that could be used to destroy German dams that were very important for their war effort.

The bomb was shaped like a cylinder and had a spinning motion like a big top when it was dropped from an airplane. When the bomb landed on the water, it bounced along the surface like a skipping stone. It was designed to hit the dam at just the right spot, then sink down the side of the dam and explode, causing a lot of damage.

The tricky part was figuring out how to drop the bomb so it would bounce just right. Barnes Wallis had to calculate the speed of the airplane, the angle of the bomb's trajectory, and the number of bounces the bomb had to make to hit the dam at the right spot. It took a lot of practice and precision to get it right.

In the end, the bouncing bomb was used to destroy two German dams in 1943, and it played a big part in the war effort. Even today, bouncing bombs are not used very often, but they're still an important part of military history.