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===About Infra-red===
: [[Infra-red]] is a [[Transverse Wave|transverse waves]].
: [[Infra-red]] can travel through a [[vacuum]] as well as through [[gas]]es in the [[Earth's Atmosphere|Earth's atmosphere]].
*[[Reflection|Reflected]] - [[Infra-red]] can bounce off an [[interface]] between two [[medium|media]], particularly the surface of a shiny [[metal]].
*[[Refraction|Refracted]] - [[Infra-red]] can change direction when they cross the [[interface]] between two [[medium|media]].
====Unique Properties====
: [[Infra-red]] can cause [[atom]]s and [[molecule]]s to [[vibrate]], [[heating]] a [[material]].
====Applications====
: Different [[frequency|frequencies]] of [[infra-red]] have different [[application]]s.