p. ZEEMAN: "ON FRESNEL'S COEFFICIENT FOR LIGHT OF DIFFERENT COLOURS" (2nd PART.) 



la A = 6870 p ^ 2.13 2a A = 4580 p = 2.16 3a A = 4580 p = 2.26 



lb ;i = 6870 p = 2.13 

 From a and b : 4 = 0.522 



2b A = 4580 p = 2.16 

 Ó = 0.803 



3b ;. = 4580 p = 2.26 

 A = 0.812 



4 A = 6870 p = 2.21 

 .d = 0.53 



5 A = 4500 p = 2.30 

 a = 0.86 



Proceedings Royal Acad. Amsterdam, Vol. XVIII. 



MELIOTVP1E, VAN LEE». AMSTERDAM. 



