364 Prof. Taylor Jones, Mr. Morgan, 'awd Prof. Wheeler on 

 which with the substitution z — rj2 s/ht becomes 



2/:c7r 3/2 rJ r 



(3) 



When t is greater than T, the solution takes the form : 

 8«r"*J ffl «*-T)] 3 ' 2 ' 



1 



2/W j 



"Sk(t-T) 



W 



2*/kt 



In Table II. are given numerical values of 6 calculated 

 from equations (3) and (4) for a total quantity of heat of 

 0*001 calorie supplied uniformly during 0*005 sec. — that is 

 to say, 



q = rr. = -pcal./sec. 

 15 



Table II. 







Temperature 



at 





t sec. 





I 













05 -075 



•1 



•15 cm. 



•001 



00 



518 | 54 



3 







•002 



00 



1197 283 



58 



1 



•003 



00 



1641 517 



154 



9 



•004 



00 



1952 714 



258 



26 



•005 



00 



2181 



876 



358 



51 



•006 



3391 



1841 



956 



444 



80 



•007 



! 



1890 



1303 



838 



470 



109 



It will be seen from Table II. that after the heat supply 

 ceases, the temperature at points near the origin (for example, 

 at a distance r = 0*075 cm.) rises a little before falling in 

 consequence of the diffusion of the heat throughout the 



