Does Matter Exist? 



velocity of light, which simply means that this 

 velocity constitutes a limit which no corpuscle 

 ever can reach, because no matter how great the 

 energy brought into action it could never move 

 a mass which had become infinite. 



These theoretical inferences of the English 

 scientist have been fully confirmed by the ex- 

 periments of Simon and Kaufmann. These two 

 physicists succeeded in measuring the apparent 

 mass of corpuscles moving at different speeds, 

 and they found that it increases rapidly as 

 the speeds approach 300,000 kilometres per 

 second. 



We are thus already practically sure that the 

 entire mass of the corpuscle cannot consist of 

 matter. But are we sure that any part of it is 

 really due to matter? A German physicist, 

 Herr Max Abraham, asked himself the same 

 question, and to clear up the matter he sub- 

 jected to mathematical analysis the case of a 

 hypothetical corpuscle consisting solely of an 

 electric charge without any material mass 

 at all. It still has an apparent mass due to 

 its wake alone, and it is possible to calculate for 

 different speeds the corresponding apparent 



