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*[[Transmit|Transmitted]] - [[Light]] can pass through a [[medium]].
*[[Absorb (physics)|Absorbed]] - The [[energy]] [[Energy Transfer|transferred]] by [[light]] can be taken in by an [[opaque]] [[material]].
*[[Reflection|Reflected]] - [[Light]] can bounce of off a surface. This can be either [[Diffuse Reflection]] or [[Specular Reflection]].
*[[Refraction|Refracted]] - [[Light]] can change direction when it changes [[medium]].
===Medium===
: [[Light]] can travel through a [[transparent]] [[medium]] but it does not need a [[mediummatter]] to travel through as it can pass through a [[vacuum]].
: [[Light]] can travel through any [[transparent]] [[solid]], [[liquid]], [[gas]].
: [[Light]] travels most quickly through a [[vacuum]].
*Indigo
*Violet
==Key Stage 4==
===Meaning===
'''Visible light''' is an [[Electromagnetic Wave|electromagnetic wave]] that [[human]]s can see.
===About Light===
====Properties====
: '''Visible light''' is a [[Transverse Wave|transverse wave]].
: '''Visible light''' can travel through a [[vacuum]] as well as through any [[transparent]] [[solid]], [[liquid]], [[gas]].
: The [[speed]] of '''visible light''' through a [[vacuum]] is 300,000,000[[m/s]].
As a [[wave]] [[light]] can be:
*[[Transmit|Transmitted]] - '''Visible light''' can pass through a [[medium]].
*[[Absorb (physics)|Absorbed]] - The [[energy]] [[Energy Transfer|transferred]] by '''visible light''' can be taken in by an [[opaque]] [[material]].
*[[Reflection|Reflected]] - '''Visible light''' can bounce off the [[interface]] between two [[medium|media]]. This can be either [[Diffuse Reflection]] or [[Specular Reflection]].
*[[Refraction|Refracted]] - '''Visible light''' can change direction when it crosses the [[interface]] between two [[medium|media]].
=====Colour=====
: Different [[frequency|frequencies]] of '''visible light''' are [[reflect]]ed or [[Absorb (Physics)|absorbed]] by different surfaces giving them colour.
'''Visible light''' can be divided into 7 [[colour]]s:
*Red - The lowest [[frequency]] and longest [[wavelength]] of '''visible light'''.
*Orange
*Yellow
*Green
*Blue
*Indigo
*Violet - The highest [[frequency]] and shortest [[wavelength]] of '''visible light'''.
====Applications====
: '''Visible light''' is used for [[sight]], photography, microscopy, telescopy because it can be seen with the [[human]] [[eye]].
====Dangers====
: There are no dangers of '''visible light''', unless it is extremely intense in which case it could cause blindness.