MICROSPECTROSCOPY AND MICROSPECTROPHOTOMETRY 



245 



The curve (1) shows the densities in the image A' of the object 

 along xx' while curve (2) shows those in the image W of the neutral 

 wedge along yy' . The curve in Fig. 10.4 is derived by plotting the 

 photographic densities dp as ordinates (densities measured along vv') 



; v.^l'\^^^^y■^",■ ^ .^ ' .^v^ ' ^ ' ■'' ' .'■'■ ' ■ ' ' ' .■.'• ' - ' ■^■■ ' ■ ' - • ' ■ ' ■■ ' ■ ' ■^■'■■ ' ■ ' ■'^'•'C' 





'^•X^i^ly^, ■l^ f. '^-' .jy 



■ ■.\\,. .■.■.-< .■.■_^ ,■.■_>•. ^■^■^.^ .■-■-^« ■-■ ^ i-.-^ yy ftYl'.'l 1 I'lYrt 



FiG. 10.3. Analysis of the negative. 



flo* 



«- d 



Fig. 10.4. Abscissae: actual densities (d) of the neutral wedge. Ordinates: densities dp 



measured along vv' (Fig. 10.3). 



