You don dey chenj Refrakshion

[[File:Refraction_photo.png|thumb|A ray of lait dé refrakted for a plastik blok]]
For fysiks, '''refrakshion''' bi di ridairekshion of a wave as e pas from wan medium to anoda. Di ridairekshion fit dé kausd bai di chenj in di wave spid or bai a chenj in di medium.<ref>{{Cite web |last=((Di Editors of Ensaiklopaedia Britannika)) |title=Refrakshion |url=https://www.britannica.com/science/refraction |access-date=2018-10-16 |website=Ensaiklopaedia Britannika}}</ref> Refrakshion of lait bi di mos komonli obsavd fenomenon, but other waves such as saund waves and wata waves also dé experiens refrakshion. Haw moch a wave dé refrakted dé detamaiynd bai di chenj in wave spid and di inishial dairekshion of wave propagashion relativ to di direkshion of chenj in spid.
[[File:Snells_law.svg|thumb|Refrakshion of lait for di intafais between tuw media of different refraktiv indisis, with n<sub>2</sub> > n<sub>1</sub>. Since di feiz velociti dé lowa for di sekond medium (v<sub>2</sub> < v<sub>1</sub>), di angul of refrakshion θ<sub>2</sub> dé les than di angul of incidens θ<sub>1</sub>; dat is, di ray for di haia-index medium dé klosa to di normal.]]
[[File:Refraction_animation.gif|thumb|Wen a wave dé muv into a slowa medium di wavefronts ga get kompresd. For di wavefronts to stay konnekted at di baundri di wave must chenj dairekshion.]]

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