Interference Color: From Soap Bubbles to Contaminant Sensor скачать в хорошем качестве

Interference Color: From Soap Bubbles to Contaminant Sensor

The physical phenomenon behind the colorful patterns, from soap bubbles to rainbows, is interference. We use the soap bubble experiment to explain what interference is and how it is caused. We also use liquid crystals (the material in TV screens) to build thin films to observe interference. The interference color changes when the liquid crystal is exposed to different concentrations of contaminants. Therefore, we can build a contaminant sensor based on the interference color. But it is difficult for human eyes to see the difference in color change. So we use machine learning and computer vision to help us find the small differences that tell us what the concentration of the contaminant is. From this video, you'll learn that interference colors are not only beautiful but also useful.