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Abstract: The shadow radiation is the constituent part of the physical optics (PO) field. It was noted there that this field concentrates in the vicinity of the shadow region. This chapter verifies this property by numerical investigation of the shadow radiation generated by the finite-length cylinder. The most appropriate procedure for doing this work would be the direct application of the shadow contour theorem. It presents numerical investigation of the scattered field. The chapter considers its physical structure and presents simple high-frequency asymptotics for the directivity pattern. It deals with the E-Polarization and the H-Polarization. Finally, the chapter discusses about the PO shooting-through rays and their cancellation by Fringe rays, and the refined asymptotics for the specular beam reflected from the lateral surface.