Earwigs eat aphids and several other harmful pests as well as hosta leaves. Some gardeners put up with the damage and leave the earwigs in the garden to control other pests. You can control earwigs with traps. Place a piece of crumpled paper under a flowerpot or use a tube of paper or bamboo as a trap.
In optics, refraction is a phenomenon that often occurs when waves travel from a medium with a given refractive index to a medium with another at an oblique angle. At the boundary between the media, the wave's phase velocity is altered, usually causing a change in direction.
Report Abuse. DIFFRACTION-diffraction is bending of light at the corner of an obstacle. eg: DIFFRACTION OF LIGHT REFRACTION-Refraction is the bending of a wave when it enters a medium where it's speed is different.efraction-is the change in direction of waves which occurs when waves travel from one medium to another Diffraction-is the bending of waves around obstacles and opening.