>Blobs of explosive normally have a chemical composition that is different from blobs of paper in a way that a X-ray scanner would detect. How is that? If a bl

>Blobs of explosive normally have a chemical composition that is different from blobs of paper in a way that a X-ray scanner would detect. How is that? If a block of explosives is close to the same density as a stack of paper, they're both going to show up as similar colored blocks on the X-ray.