While present standard unified field and high energy models require ?big science? for experimental verification, a fairly recent theory offers the prospect of allowing experimental investigations at a level that can be performed with more traditional experimental systems. We have performed an experiment based on the dynamic theory of Pharis E. Williams that attempts to search for the existence of a macroscopic coupling between electromagnetism and gravity. Preliminary results from a bench level test appear to show the existence of such coupling. Based on a preliminary model by Williams, we have estimated the coupling constant of this effect to be 4 x 10^-15 kg/m^4.