"288 Mr. N. Eumorfopoulos on the Determination 



The mean result *0945 was assumed for all the rods. 



No 



correction was made for change of specific heat with tem- 

 perature. 



The following readings are given to show how far they 

 agree for different cycles on the same day : 





Point A. 





Point B. 



I. 



II. 



III. 



Mean. 



I. 



II. 



III. 



Mean. 



Time : 









Time : 









l h 0'". 



3 h m . 



4 h m . 





l h 30 m . 



3 h 30 m . 



4 h 30 m . 





2015 



19-85 



19-85 



19-95 



883 



8-86 



8-85 



8-85 



17-16 



16-93 



16-91 



17-00 i 



8-88 



900 



8-99 



8-96 



13-87 



13-69 



13-74 



13-77 



8-75 



8-78 



8-82 



8-78 



11-25 



11-05 



10-97 



11-09 



8-26 



8-31 



8-27 



8-28 



3-16 



3-05 



3-06 



3-09 



3-86 



3-94 



3-88 



3-89 



270 



2-59 



2-56 



262 



3-44 



3-45 



3-47 



3-45 



2-29 



223 



216 



2-23 



303 



313 



309 



3-08 



197 



1-88 



1-83 



1-89 



2-66 



2-78 



2-75 



2-73 



The above readings are deflexions in centimetres : 1 cm. of 

 scale corresponds to a rotation of the magnet through 11', or 

 1 cm. corresponds to a difference of temperature between the 

 two junctions of 1 j degrees Cent. 



The following expressions show the series required to fit 

 the temperatures obtained ; they are the expressions for Set I. 

 of Rod II., but the constants are of approximately the same 

 magnitude with all the rods : — 



Temp. A = 13-95 + 12-67sin (2tt^ +2*1412) + *42 sin (4tt^+3'91) 

 + 2-18 sin (&r£-+ 1'13)+ "18 sin (8tt ^ +3'33) 

 + -80 sin (10tt ^ + *56) + . . . + '31 sin (14w | + -28) . 



Temp. B= 6-16 + 3*92 sin (2tt| + 1*3806) + -10 sin (4tt^ +2-41) 



+ -38 sin (6tt « - -40) + '04 sin (8tt ^ + 1'14) 



+ -07sin(107r|-l-70)+. . . + '03 sin (14tt|-2-68). 



