flexible
Because of refraction, a straw or pencil placed in a glass of water often appears to have this physical defect.
What is bent?
Due to light bending at the water's surface, objects at the bottom of a pool appear to be in this position compared to their actual location.
What is closer?
The phenomenon when light waves bend as it passes an opening or the edge of an obstacle.
What is diffraction?
how we see certain colors through light waves hitting surfaces depending on how dark or light it is.
picture of transmission
what is transmission?
The phenomenon where light bounces back when hitting a surface but staying in same medium causing an upside down image
What is a Concave surface?