THE ROMANCE OF SCIENCE 



THE PRESSURE OF LIGHT 



EY 



J. H. POYNTING, Sc.D., F.R.S. 



MASON FKOKESSOR OF PHYSICS AT THE UNIVERSITY OK BIRMINGHAM 



/ 7 J ' V 



PUBLISHED UNDER THE DIRECTION OF THE G 

 LITERATURE COMMITTEE 



LONDON 

 SOCIETY FOR PROMOTING CHRISTIE 



NORTHUMBERLAND AVENUE, W.C. J 43, QUEEN 



BRIGHTON : 129, NORTH STREET 



NEW YORK: E. S. GORHAM 



1910 



