References

Dead Scientist of the week 

http://deadscientistoftheweek.blogspot.com/2011/08/arthur-jeffery-dempster.html

Britannica 

https://www.britannica.com/biography/Arthur-Jeffrey-Dempster

Find a Grave

http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=95882655

Uranium-235 Wiki

https://en.wikipedia.org/wiki/Uranium-235

The University of Buffalo

https://www.ubjobs.buffalo.edu/applicants/jsp/shared/position/JobDetails_css.jsp?postingId=220415

Berkeley University

http://vcresearch.berkeley.edu/research-unit/center-stable-isotope-biogeochemistry

 Chemical Institute of Canada  

http://www.cheminst.ca/career/universities-and-colleges

Hutton James Institute 

http://www.hutton.ac.uk/research/groups/environmental-and-biochemical-sciences/isotope-applications

Youtube Video 

http://youtu.be/mklOWiKUgvQ