Tables 182-i84.-THE REFLECTION OF LIGHT. 



191 



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



^ ^ ' ' 2 ( sm- it 



sin^ (/ — ^) 1 tan^ (/' — r) 



+ 



^ ; .<4 is the amount polarized in the plane of inci- 



sin- (t + '') tan^ (2 -\- r) 

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



TABLE 182. — Light reflected when i = 0° or Incident Light is Normal to Surface. 



TABLE 183. —Light reflected when n is near Unity or equals 1 + dn. 



Angle of total polarization r= 57° lo'.s, A ;= 16.99. 

 • This column pves the degree of polarization. t Columns 5 and 6 furnish a means of 



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

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

 Smithsonian Tables. 



