Changes

 ===Colour Filters==={| class="wikitable"|-|: An [[File:ColourFilterRed.png|center|300pxobject]]|may appear to have a [[File:ColourFilterBlue.png|center|300pxcolour]]for three reasons:|-| style="height:20px; width:200px; text*[[Reflection]] -align:center;" |A red filter only An [[object]] may [[transmitreflect]]s red some [[lightfrequency|frequencies]] but while [[Absorb (physicsPhysics)|absorbsabsorbing others]] all the others '''colours'''.:*[[Colour Filter| style="height:20px; width:200px; textFiltering]] -align:center;" |A blue filter only An [[object]] may be viewed through a [[transmittransparent]]s blue [[lightmedium]] but which [[Absorb (physicsPhysics)|absorbs]] all the others '''colours'''certain [[frequency|frequencies]] of [[light]].|}: *[[Scattering]] - An [[object]] may be viewed through a [[transparent]] [[Colourmedium]] filters work by which [[Absorb (Physics)Scattering|absorbingscatters]] some certain [[frequency|frequencies]] of [[light]] while . This is why the [[sky]] appears blue and the [[transmitSun]]ting othersappears yellow.