THE CAMBRIDGE PHILOSOPHICAL SOCIETY

2011 ◽  
pp. 121-126
Keyword(s):  
Cambridge Philosophical Society

scholarly journals The action of radium and certain other salts on gelatin

1906 ◽  
Vol 78 (525) ◽  
pp. 380-384
Keyword(s):  
Cambridge Philosophical Society ◽  
Satisfactory Method ◽  
Active Substances

The action of radio-active substances on gelatin media has recently attracted attention. In 'Nature’ there appears a letter by J. B. Burke, in which the writer states that certain “bacterial-like” cells are obtained as the result of the action, the cells grow up to a certain stage and subdivide, they contain a nucleus, and appear to be highly organised bodies. The author has made numerous experiments on this subject, and has made several communications to ‘Nature’ and to the Cambridge Philosophical Society. The present paper deals chiefly with the results obtained by the aid of photography, which obviously is a much more satisfactory method of recording than mere drawing.

1. On the Theoretical Investigation of the Absolute Intensity of Interfering Light

1845 ◽  
Vol 1 ◽  
pp. 371-371
Author(s):  
Kelland
Keyword(s):  
Theoretical Investigation ◽  
Absolute Intensity ◽  
Cambridge Philosophical Society ◽  
The Absolute

This Memoir is the prosecution of a subject on which the author had previously touched in a paper which is printed in the seventh volume of the Transactions of the Cambridge Philosophical Society. It has for its object the investigation of the quantity of light which is received on a screen of unlimited dimensions, after passing through a certain aperture, or suffering reflexion at two mirrors. The end for which the investigation is undertaken is to ascertain the constant which must be introduced in using Huygens's principle.

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