såpebobler

Såpebobler are spherical films of soapy water enclosing air or another gas. They are a common childhood toy and a scientific phenomenon studied in physics and chemistry. The iridescent colors seen on the surface of a soap bubble are caused by the interference of light waves. Different wavelengths of light are reflected and refracted differently depending on the thickness of the soap film, creating the vibrant colors.

The formation of a soap bubble relies on the surface tension of the soapy water. Soap molecules have a hydrophilic (water-attracting) head and a hydrophobic (water-repelling) tail. When soap is mixed with water, the soap molecules arrange themselves at the surface, reducing the water's surface tension. This allows the water to stretch and form a thin film around the air. The bubble maintains its spherical shape due to the uniform pressure inside and the surface tension pulling equally in all directions.

Soap bubbles are fragile and burst when the soap film becomes too thin or is disturbed. Factors like evaporation, touching the bubble with a dry object, or even temperature changes can cause them to pop. While often seen as a simple amusement, the study of soap bubbles has led to advancements in understanding fluid dynamics, surface tension, and light interference.