When a bubble pops, the thin film of soap that forms the bubble breaks and the water between the layers of soap evaporates quickly. This causes the bubble to collapse, trapping a small amount of air inside. The trapped air is then compressed, which increases the air's temperature and causes it to emit light in the infrared spectrum. This light is not visible to the human eye, but it can be detected by infrared cameras, making the bubble appear black.
No, not all bubbles turn black when they pop. The color of a bubble when it pops depends on the type of soap used, the thickness of the bubble film, and the amount of water present in the bubble. For example, bubbles made with thicker soap films or with less water may not turn black when popped.
Yes, the color of a bubble when it pops can provide information about the bubble's composition. For example, if a bubble turns black when it pops, it means that the soap used to create the bubble contained a high concentration of water. Bubbles that do not turn black when popped may contain a lower concentration of water or a thicker soap film.
No, the black color of a popped bubble is not permanent. As the trapped air inside the bubble cools down, the infrared light emission stops and the bubble will eventually turn back to its original color. This process can happen quickly, within a few seconds, or it may take several minutes depending on the environment and the size of the bubble.
Yes, bubbles turning black when they pop can be used as an indicator of the amount of water in a soap solution. The more water present in the solution, the higher the concentration of water in the bubble and the more likely it is to turn black when popped. This can be a useful tool for scientists and researchers studying the properties of soap and water solutions.