XIX, 1. Rheinberg: Common Basis ofthe Theories ofMicroscopic Vision. 25 



produced by pairs of adjacent slots is left iinaltered, without new 

 ones being formed wliich in any way approach them as regards 

 brightness, but that they are somewhat narrowed in width and 

 separated by a greater distance in consequeuce. 



w cc -f in to r-'co '^ «o <ä i^:'^ iO <x> v* \\n co i>'CO i> 



iH N W -^ iO tol-r- Tl « t lO '< -^ Oi CC '^l^ IM «^ W 



The same method of representation might be nsed for a larger 

 number of slots, figure 29 and 28 shows the action of seven 

 slots. ^ The Chief point to note about these is the fnrther decrease 

 in width of the bright bands. 



1) In this tigure the dotted line RP represents the intensity curve 

 for a Single slot. For greater convenience, it is taken as being straight. 



