Capillary waves

Capillary waves are small surface waves that occur on liquids, primarily due to the effects of surface tension. When a disturbance, such as wind or a pebble dropped in water, creates ripples, the surface tension of the water works to restore a flat surface, leading to these tiny waves. They are typically short-lived and have wavelengths of just a few centimeters, making them different from larger waves like those seen in the ocean. Capillary waves can be observed on surfaces of ponds or lakes, especially when there's a light breeze.