TABLES 356-358.-THE REFLECTION OF LIGHT. 207 



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



,..,„. I ( sin2 {i — r) tan^ {i — r) \ , . . , . , . , , r . . 



= i {A -\- B) = - < . „ .. I — r + : — „ ,. I . (• ; ^ IS the amount polarized m the plane of mci- 



2 ( sm^ {i -\- r) tan2 {i -\- r) ) ^ ^ 



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

 TABLE 356.— Light retlected when i = 0° or Incident Light Is Normal to Surface (m-1) »/(» + !)'. 



TABLE 357. — Light reflected when n Is near Unity or equals \+(hi. 



Angle of total polarization =: 57*^ lo'-s, A := 16.99. 

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



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

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

 Smithsonian Tables. 



