My photograph, attempting to copy the lighting of the photograph by Bill Brant, below. Although I successfully recreated the contrast, I think I should have used paper around the spotlight to shield the hair from view.
Photograph taken from : http://www.artlimited.net/picbase/news/artlimited_img52942.jpg
chi·a·ro·scu·ro – Chiaroscuro
Example of Chiaroscuro taken from: http://www.digital-forums.com/showthread.php/485725-Dreams-of-Dark-and-Light-Chiaroscuro-and-Rembrandt-Lighting