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===Meaning===
The '''angle of refraction''' is the [[angle]] between the between the [[Refracted Ray|refracted ray]] and the [[normal]].
===About the Angle of Refraction===
: When [[light]] travels from [[air]] into [[glass]] the '''angle of refraction''' is always smaller than the [[Angle of Incidence|angle of incidence]].
: When [[light]] travels from [[glass]] into [[air]] the '''angle of refraction''' is always greater than the [[Angle of Incidence|angle of incidence]].
===Examples===
{| class="wikitable"
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|[[File:RefractionGlassBlock.png|center|600px]]
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| style="height:20px; width:200px; text-align:center;"|The '''angle of incidence''' is highlighted in pale red in this [[diagram]].
|}
==Key Stage 4 Higher==
===Meaning===
The '''angle of refraction''' is the [[angle]] between the between the [[Refracted Ray|refracted ray]] and the [[normal]].
===About the Angle of Refraction===
: When [[light]] travels from a less [[Optical Density|optically dense]] [[medium]] (such as [[air]] to a more [[Optical Density|optically dense]] [[medium]] (such as [[glass]] or [[water]] the '''angle of refraction''' is always smaller than the [[Angle of Incidence|angle of incidence]].
: When [[light]] travels from a more [[Optical Density|optically dense]] [[medium]] (such as [[glass]] or [[water]]) into a less [[Optical Density|optically dense]] [[medium]] (such as [[air]]) the '''angle of refraction''' is always greater than the [[Angle of Incidence|angle of incidence]].
===Examples===