118 



THE ANATOMY OF SCIENCE 



eventually to the continuous types of physics 

 and mathematics. 



In the meantime the quantum theory has in- 

 troduced an element of paradox, the crux of 

 which appears in the theory of light. Newton 



FiGTJHE 21 



Diagrammatic Representation of Interference 



thought of the transmission of light as ha\dng 

 two aspects, in one of which it resembled the 

 discharge of a bullet, in the other the spreading 

 of a ripple or wave. It was the latter view which 

 took root, for we know of nothing except wave 

 motion which gives any analogy to the phe- 

 nomenon of the interference of light. 



If ripples or waves proceed from two points 



