Relative to the heterogeneous object is the chest x-ray. Within the chest there are different structures with varying densities and atomic numbers. X-rays are easily transmitted through the air in the lungs, but there is absorption in the ribs, sternum and the heart. The transmitted x-rays through the air in the lung field is seen as black on the radiographic image because the x-rays interacted with the IR. The ribs, sternum, and heart that had an increase of absorption are seen as white. Soft tissue surrounding is not as dense as the bone, but still has some absorption take place, so these areas are also seen with a varying slight bright appearance. The heterogeneous screw driver and the chest both have appropriate contrast resolution and
