We often think of bubbles as fun little toys that children play with. But behind their light and fragile appearance, bubbles hold many scientific lessons. Scientists see bubbles as “mini science tools” that can help us understand big things like weather, marine life, and even how the universe works.For example, out in the open ocean, bubbles are formed when waves crash and pull air into the water. These bubbles play an important role—they help the ocean absorb and release gases like oxygen and carbon dioxide. This process influences the Earth's climate balance. Researchers from the University of Southampton study these bubbles to improve weather and climate predictions.

Soap bubbles are also fascinating to study. When we blow a bubble, we’re actually creating a very thin layer of water. This layer can bend light, which is why we see rainbow-like colors. Beyond their beauty, these bubbles also follow specific laws of physics and mathematics that have been studied since the time of scientists like Lord Kelvin. Interestingly, one of the early discoveries in bubble science didn’t come from a high-tech lab. In the 19th century, a woman named Agnes Pockels in Germany used simple tools in her kitchen to study how water and soap interact to form bubbles. She found that adding soap reduces the surface tension of water, making it easier for bubbles to form.

Surface tension is a force that makes the surface of water behave like a stretchy skin. When soap is added, this force becomes weaker, allowing water to form thin, flexible films. This helps bubbles last longer and show their beautiful colors. In laboratories, scientists even use soap bubbles to study complex air and water flow patterns, like the shape of storms. Beyond the lab, bubbles play an important role in the animal world. Emperor penguins, for instance, trap air bubbles in their feathers. When they want to swim quickly to the surface, they release these bubbles to reduce water drag, helping them move faster. Humpback whales also use bubbles for hunting. They create bubble rings to trap fish and then use sound to guide the prey into the trap.

Bubbles can also “talk.” When they form and pop underwater, they make a distinct sound. Small bubbles make high-pitched “pings,” while larger bubbles produce deeper tones. Scientists use these sounds to measure the size and number of bubbles in the ocean—information that’s important for studying ocean conditions and climate change. Bubble technology is even used in industry. For example, in shipping, Japan has developed a bubble system beneath ships to reduce water friction. This helps ships save fuel. In diving training pools, bubbles are used to make the water feel softer when divers land, reducing the risk of injury. Moreover, bubbles help scientists explore hard-to-study natural phenomena, like sudden shape changes in matter. For instance, when a water droplet explodes or a star’s structure shifts instantly. By studying how soap bubbles change shape, researchers can mimic and understand these events safely on a small scale.

All of this proves that bubbles are far from trivial. They are examples of how something small can have a big impact. Through bubbles, we can better understand complex things like natural behavior, sound, energy, and even climate change. Bubbles—simple objects that open the door to an extraordinary world of science.

Source: https://youtu.be/6-Ub_r_GFZY?si=axh23IUjbmJbv-LD (The Science of Bubbles)