Refraction of waves
Waves A wave is passed across or through a material (medium), eg light waves are transmitted through air, glass and water. at the interface (boundary) between two materials may change direction. Process by which a wave changes speed and sometimes direction upon entering a denser or less dense medium, eg a light ray changes direction when refracted by a lens. is the change in direction of a wave at such a boundary. All wave types can be refracted.
It is important to be able to draw Diagram that represents the direction and angle of travel of light. to show the refraction of a wave at a boundary.
Explaining refraction - Higher
The A measure of compactness and the ratio of mass to volume. It is usually measured in kilograms per metre cubed (kg/m3) or grams per centimetre cubed (g/cm3). of a material is one of the factors that affects the speed that a wave will be transmitted through it.