[dawes] 



DISPERSIOxNf BY INTERFERENCE METHOD 



289 



22O0 



2000 



IBOO 



^ 



'^^ 1600 



I 



I 



1400 



^ 1200 

 \ 1000 

 * 800 



600 



4200 4600 5000 54VÛ ^800 



\/VAV£ LCI^GTH X /O^ CM 



C200 



19— C 



