👉 The term "opalescing" in the context of optics refers to a phenomenon where light behaves like it is made up of several different colors or wavelengths, rather than just one color. This can occur when light travels through a material that has a high number of visible and near-infrared (NIR) wavelengths, such as glass or certain types of water. In this case, the term "opalescing" refers to the way light appears in these materials due to the interference effects of light
