👉 Non-refraction is a physical phenomenon in which light rays refract through a material, rather than bending or reflecting. This occurs when the speed of light in a medium (such as air) is less than the speed at which it travels through the medium itself. In other words, if light travels through a material with a higher refractive index than that of the surrounding medium, it will bend back towards the source, rather than being reflected or transmitted.
Non-refraction is a critical concept in optics
nonrefraction