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reflection
When light is bounced back of a shiny surface like a mirror.
*Light is reflected off a mirror
refraction
When light changes direction because it passes through a different medium like glass or water.
*The light was refracted in the glass of water
opaque
An object that allows no, or little light to pass through it. You cannot see through it.
transparent
An object that you can see through because light passes though it.
*Glass is transparent.
translucent
An object that allows some light to pass though but scatters the light so there is not a clear image.
*translucent plastic/glass
spectrum
the set of colours which light can be separated into
*a spectrum of colours
incident ray
The ray of light that comes from a light source and hits and object. Compare to reflected ray
prism
A transparent block used to split up or reflect light.
absorb
If light is absorbed it doesn't reflect back.
*a red object absorbs blue light but reflects red light.
transmit
to allow light to pass through an object.
* glass transmits light
diffusion
When light is scattered because it hits a rough surface and the light is reflected in different directions.