Reflection and Refraction of Light25722.50Applying Snell’s law to this refraction gives 21sinsinglassairnnθ=If 122=, this becomes ( )222sinsin 22sincosss2glanθθ==or 2cos2glassn=Then, the angle of incidence is 11121.5622cos2cos22glassn−−=77.5= °22.51In the Figure at the right, observe that 190β=°−and 190α−. Thus, =. Similarly, on the right side of the prism, 290δ−and 290γ−, giving =. Next, observe that the angle between the reflected rays is ( ) ( )Bβγ++=+, so ( )2B+=. Finally, observe that the left side of the prism is sloped at angle from the vertical, and the right side is sloped at angle .Thus, the angle between the two sides is A=+, and we obtain the result ()=BAαγ±±²³±´µ²³²³±³±³²
This is the end of the preview. Sign up
access the rest of the document.