When you blow on soapy water, the ultra- thin soap and water film traps air and holds it inside by surface tension. These layers of soap surround an ultra- thin layer of water in the middle. There's an ultra- thin layer of soap on the outside and the inside. How thin? The walls of a soap bubble are mere millionths of an inch thick!Ī bubble's walls are sort of like a sandwich. Instead, bubbles consist of extremely thin layers of soap and water. Just what are those bubbles made of anyway? If you guessed soap, then you're on the right track!īubbles look like little clear balloons filled with air, but they're not made out of latex like most balloons are. To understand why you can often see the colors of the rainbow in bubbles, we need to look more closely at those bubbles. But did you know that you can sometimes see rainbows on a bright, dry, sunny day? If you've ever blown bubbles in the backyard on a warm summer day, then you know that those tiny orbs that float around your head sometimes shimmer with the colors of the rainbow. Rainbows seem like a reward for suffering through those rainy days. When you step out into the humid air, smelling the fresh scent that often follows a storm, you may scan the horizon in search of those brilliant colors - red, orange, yellow, green, blue, indigo, and violet - that we call a rainbow. What are we talking about? A rainbow, of course!Īfter a drenching rainstorm, the Sun will sometimes find its way through the clouds. If those clouds bring rain, though, you may look toward the skies and see something spectacular. Has someone ever told you that every cloud has a silver lining? Some days that might seem true, while other days just seem cloudy.
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