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Natural Phenomena Involving Total Internal Reflection

APPLICATION OF TOTAL INTERAL REFLECTION :OPTICAL FIBRESSPARKLING DIAMONDPRISM PERISCOPE -OPTICAL FIBRES

CLADDING- OPTICALLY LESS DENSECORE-OPTICALLY DENSERTHE ANGLE OF INCIDENCE GREATER THAN THE CRITICAL ANGLE OF OPTIC FIBREFULFIL THE TWO REQUIREMENT OF TOTAL INTERNAL REFLECTION, TOTAL INTERNAL REFLECTION OCCURSINSTEAD OF REFRACTION. THE CONTINUOUS PROCESS TRANSMIT THE SIGNALS.ADVANTAGES OF OPTICAL FIBRESLOW-COSTCLEARER SIGNALS(FREE FROM ELECTROMAGNETIC FIELD INTERFERENCE)MORE INFORMATION CAN BE TRANSMITTED AT A TIMETHINNER AND LIGHTER(HANDLES EASILY)

SPARKLING DIAMOND

PURE DIAMONDDIAMOND-SHAPED GLASSTOTAL INTERNAL RELECTION OCCURS BECAUSE THE CRITICAL ANGLE OF DIAMOND IS SMALL(24.4) . LIGHT EASY TO EXCEEDS THE ANGLE.TOTAL INTERNAL REFLECTION OCCURS CONTINUOUSLY IN THE DIAMOND MADE THE DIAMOND SPARKLING.DENSERLESS DENSETOTAL INTERNAL REFLECTION OCCURS LESS FREQUENT.REFRACTION OCCURS MORE FREQUENT. THIS IS BECAUSE THE CRITICAL ANGLE OF GLASS IS HINGER. LIGHT DOES NOT EASILY EXCEEDS THE ANGLE. SO IT LOOOK LESS SPARKLING THAN PURE DIAMONDS.

PRISM PERISCOPE

TWO PRISM WITH ANGLES 90 ,45,45 IS USED. THEY MUST BE ARRANGED SUCH THAT THE SIDE FACING THE LIGHT RAYS IS VERTICAL(NOT INCLINED)INSIDE THE PRISM -DENSEROUTSIDE THE PRISM LESS DENSETHE CRITICAL ANGLE OF GLASS PRISM IS 42. THE LIGHT THAT ENTERED PERPENDICULARLY MAKES AN ANGLE OF 45 WITH THE NORMAL ON INCLINED PLANE. HENCE TIR OCCURS.ADVANTAGES OF USING PRISMTHE IMAGE IS BRIGHTER(ALL THE LIGHT IS REFLECTED)IMAGE IS CLEARER( NO MULTIPLE IMAGE IS FORMED)WITHSTAND HIGH PRESSURE