376 Tables 418-420.— THE REFLECTION OF LIGHT 



According to Fresnel, the amount of light reflected by the surface of a transparent medium 



...,_,. i ( sin 2 (i — r) tan 2 (i — r) J ... . . . . , , . . 



= 5 {A + B) = - < . „ ,. . — r + - — „ ,. . — r > ; A is the amount polarized in the plane of lnci- 

 2 ( sin 2 (i + r) tan 2 (i + r) ) ^ 



dence; B is that polarized perpendicular to this; i and r are the angles of incidence and refraction. 

 TABLE 418.— Light reflected when i = 0° or Incident Light is Normal to Surface (»-l) 2 / (»+!)« 



TABLE 419. — Light reflected when n is near Unity or equals 1 + dn 



Angle of total polarizations 57° 10'. 3, A = 16.99. 

 * This column gives the degree of polarization t Columns 5 and 6 furnish a means c-t 



determining A and B for other values of «. They represent the change in these quantities for a change of n of 0.01. 

 Taken from E. C. Pickering's " Applications of Fresnel's Formula for the Reflection of Light." 

 Smithsonian Tables. 



