KS 3 laboratory Refraction of light De Lisle Catholic Science College Science department

Refraction by glass and water Refraction by a convex lens Refraction by a concave lens Refraction by a prism Virtual laboratory: Refraction of light menu

What is light refraction? refraction is a change in the direction of light waves What causes light refraction? refraction is caused by a change in speed of a light wave When do light waves change speed? light waves change speed as they pass from one type of transparent material into another

Light refraction refracted ray incident ray normal angle of refraction angle of incidence air normal Add light rays glass block

Real and apparent depth refracted ray incident ray object air liquid Brain thinks rays have travelled in a straight line Add light rays Show image

Light refraction by a lens refracted ray incident ray normal angle of refraction angle of incidence Convex glass lens air Add light rays glass

Light refraction by a convex lens Biconvex glass lens incident rays focus refracted rays Add light rays

Uses for convex lenses Eyes Cameras Magnifying glasses Correcting long sighted vision (reading glasses) Telescopes and binoculars Microscopes Projectors

Light refraction by a concave lens Biconcave glass lens incident rays refracted rays Add light rays

Uses for concave lenses Correcting short-sighted vision

Light refraction by a prism refracted ray incident ray normal angle of refraction angle of incidence air Glass prism Add light rays glass

Refraction of white light by a prism ‘white light’ Glass prism spectrum RichardOfYorkGave BattleInVain Add light rays Add memory aid refraction occurs at both surfaces

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