Reflection and Refraction of Light249(b) The angle of reflection at each surface equals the angle of incidence at that surface. Thus, ( )11i30reflectionθ==°, and ( )22i41reflectionθθ==°22.32For the violet light, , and 1.66glassn=11r1sin1sin27.5−−===1r9080.061isin.00sin50.01.66airglassnn°62.5 , 1°0.057.5 ,αθβ=°=32.5°−=°=2i90.0and β−. The final angle of refraction of the violet light is 2isinglassairnn2r1.66sin32.5sinsin631.00−−°.2=°Following the same steps for the red light ( )1.62glassn=1r2i2r28.2 ,58.2 , 31.8 , and gives 61.8 , 58.6αβ=°=°Thus, the angular dispersion of the emerging light is 2rviolet=−63.258.64.6redDispersion=°−°=°±±²³´³µ¶·¶²³´¸¶·¶²±²³´³´³±·¶¶
This is the end of the preview. Sign up
access the rest of the document.