Submillimeter Polarization in the Orion Nebula.

We have observed linear polarization of the submillimeter (270microns) continuum radiation from three regions in Orion: One centered on the Kleinmann-Low (KL) nebula, one centered on the 400microns peak 1'.5 south of the nebula, and one centered on OMC-2. The polarization measured at KL is P=(1.67+-0.24)% at phi=24+-6, and at the 400microns peak is P=(1.65 +-0.32)% at phi=28+-7. At OMC-2 we find a 2sigma upper limit of P 0. 7%. The position angle at KL is orthognal to that measured at 11microns by Dyck and Beichman and at 11 and 20microns by Knacke and Capps. If the observed polarization is due to emission from grains aligned by the magnetic field, we find that the large scale field is uniform on a scale determined by the 90" (=0.4 pc) seperation of our two beams. The submillimeter result provides a limit on the grain axis ratio, and on grain alignment times and magnetic field strength.