Outrageously Funny Word Dictionary :: Chatoyancy

👉 Chatoyancy, also known as "chaseyning," is a visual effect in which an object appears to be moving faster than it actually is. The phenomenon occurs when light travels through a material at a greater speed than the speed of sound, causing the light to appear to move towards or away from objects. For example, if you shine a bright red light on a black background, you will see that the red light seems to bounce off the black object and then reflect back into your eye

chatoyancy