4i INTRODUCTION 



law of electro-chemical decomposition, of the magnetization of 

 light, and of diamagnetism. Round each of these are grouped 

 numbers of derivative but still highly important additions to 

 scientific knowledge, and together they form so vast an achieve- 

 ment as to lead his successor, Tyndall, to say, "Taking him for 

 all and all, I think it will be conceded that Michael Faraday 

 was the greatest experimental philosopher the world has ever 

 seen; and I will add the opinion, that the progress of future 

 research will tend, not to dim or to diminish, but to enhance 

 and glorify the labours of this mighty investigator" 



In spite of the highly technical nature of his work in research, 

 Faraday was remarkably gifted as an expounder of science to 

 popular audiences; and his lectures at the Royal Institution, 

 especially those to younger audiences, were justly famous. The 

 following examples are classics in the department of clear and 

 fascinating scientific exposition. 





