1 The refractive index of a transparent material can be determined by measuring the critical angle when the solid is in air.  The cladding of an optical fibre has a refractive index equal to 1.45 and a core refractive index equal to 1.48. Calculate the critical angle of the fibre.
The star of âRidiculousnessâ and âRob Dyrdekâs Fantasy Factoryâ has married his sweetheart Bryiana Noelle Flores. Congratulations are in order for Rob Dyrdek, 41. The pro skateboarder and TV personality tied the knot with fiancee Bryiana Noelle Flores on Sept. 19.
Brodie Smith, from Mandurah, died on Ko Phangan - an island in the Gulf of Thailand - as his girlfriend, Kara Spark, watched helplessly as he stopped breathing. They were in Thailand to get treatment for Mr Smith's drug addiction and were planning the rest of their lives together.