4o.^ 



Mea.mremmt of photo N°. 154 Ji. Readings; 



on the interference fringes. on the lixed wii-e. 



53.675 53.037 52.2(34 



675 041 263 



680 046 266 



681 045 262 

 683 051 52.264 

 680 046 



686 046 

 683 044 



Mean: 53.680 53.044 Thns middle: 53.359 



52.264 

 Distance between | , _ .„„ Distance from \ 



the fringes | ' the nxed wire ) 



Mean distance of the fringes „' „„ 0.630 



O.bo6i 



Shift of Ihe fringes bj the motion 1.219 — 1.095 = 0.124 or 

 reckoned in the right direction 0.630 — 0.124=^0.506. 

 Thus shift in parts of the fringe distance 



A = — =0.803 for /> = 2.16 ii.g./cm^ 

 630 ' " ' 



thus Zi = 0.799 for p = 2.14 k.g./cm^ 



The obtained results mav be summarized in a table. 



Shift of the mfi'rf'ri'iici' friiiip's hij /■I'lvrsiih/ the direction of the 

 current. 



Under Aj,\ and Zi/, are given the shifts calculated with the formula 

 with Fresnei/s coefficient without the term of dispersion for 

 the value »'„,„, = 553.6 cm/sec belonging to p = 2.14. Under liexj, 

 are found the observed shifts with tiie probable error in the final 

 reatiing. The number of experiinenl.s is given in the last column. 



