Refraction of light in 3DSelect:refractive indicesangle of incidencequestion modecalculationspoint of view of observerauto-rotation of incident rayShow:incident ray and its anglerefracted ray and its anglereflected ray and its angletotal internal reflectionAdjust viewing angle using mouse/trackpad/fingerZoom using mouse wheel/trackpad/fingersThis simulation opens in all recent popular computer browsers (Chrome, Firefox, Safari, Edge, Opera) and Chromebooks. ProjectileSim does work on iPads, And