We have all tried our hand at skipping stones across the water, but who would have thought that such an idea could be applied to a bomb, or that it would ultimately become extremely successful in accomplishing its given task…destroying German dams and hydroelectric plants along the Ruhr valley.

During World War II, the Allies we’re desperate to cut off energy to the Nazi war machine, so the Allied engineers were given the task of finding a way to breach the defenses surrounding the dams and hydroelectric plants. In the end, it was British engineer, Barnes Wallis who came through with what he called “bouncing bombs.” To watch it in action, one is reminded of skipping stones like most of us have done in the past. In similar fashion, the bomb skips along the water bouncing over the torpedo nets to hit its target.

When World War II began, Germany had the undisputed upper hand when it came to water-based warfare with their deadly U-boats and defensive “torpedo nets” placed strategically in front of their energy-creating dams. This made it next to impossible to hit the dams with the traditional torpedo. The British Royal Air Force was determined to take out these German battlements, as they slowly wore the Axis of Evil down.

The problem was, how to somehow get past the torpedo nets, to destroy the dams and their hydroelectric plants. Wallis had to figure out how to bypass the torpedo nets, in order to make direct contact with the wall of the dams. It seemed like an insurmountable task. After dwelling on the problem for a while, Wallis seized on the potential of the Magnus effect, which would bounce a bomb across the water like a skipping stone.

The theory was to create backspin, which would counter the gravity and send the bomb skimming over the water. Once it bounced over the torpedo net, it hit the designated target. The plan seemed plausible, and the Royal Air Force commenced Operation Chastise on May 16, 1943. The results were spectacular!! As it turned out, Barnes Wallis really knew his stuff.

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