Emerald American Necklace Set Jewelry Collection 58

Emerald American Necklace Set Jewellery.

a Fashion jewellery by american emerald and diamond necklace set and earrings jewellery gems stone jewellery 

By Aamir mannan. 

Thus the ray AO is refracted along OA', apart from the small fraction of light which is reflected at O, as indicated by the dotted line. similarly, the ray BO is refracted along OB', as we consider rays which form greater angles with the normal, NOM, we reach an angle where the refracted ray only just grazes along the surface, OQ, between the two media. this angle is know as the critical angle, and all ray reaching O form the denser medium at angle greater than the critical angle are totally reflected back into the denser 

medium, it being physically impossible for any light form such rays to penetrate into the rarer medium. in the post, the angle COM can be considered as the critical angle of incidence; all the light s thus totally reflected along OC", and any other rays, such as DO, with a still larger of incidence, is, of course, also totally reflected. it is important to realise that the size of the critical angles will depend upon the relations between the reflactive indices of the denser and the rarer medium.