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The beam-normal single-spin asymmetry, $B_n$, exists in the scattering ofhigh energy electrons, polarized transverse to their direction of motion, fromnuclear targets. To first order, this asymmetry is caused by the interferenceof the one-photon exchange amplitude with the imaginary part of the two-photonexchange amplitude. Measurements of $B_n$, for the production of a$\Delta(1232)$ resonance from a proton target, will soon become available fromthe Qweak experiment at Jefferson Lab and the A4 experiment at Mainz. Theimaginary part of two-photon exchange allows only intermediate states that areon-shell, including the $\Delta$ itself. Therefore such data is sensitive to$\gamma\Delta\Delta$, the elastic form-factors of the $\Delta$. This articlewill introduce the form-factors of the $\Delta$, discuss what might be learnedabout the elastic form-factors from these new data, describe ongoing efforts incalculation and measurement, and outline the possibility of futuremeasurements.

Accessing the Elastic Form-Factors of the $\Delta(1232)$ Using the Beam-Normal Asymmetry