The mediaâs role in bringing many of the significant events of the civil rights movement to light helped the nation to progress towards more equality.
â¢ X rays are high energy electromagnetic waves, but visible light is medium energy electromagnetic waves. â¢ The visible spectrum is very narrow compared to the X-ray spectrum. â¢ X rays can penetrate the human body but visible light is not capable of doing that. Related posts: 1  Difference Between Radioactivity and Radiation.
X-ray beams pass through your body, and they are absorbed in different amounts depending on the density of the material they pass through. Dense materials, such as bone and metal, show up as white on X-rays. The air in your lungs shows up as black. Fat and muscle appear as shades of gray. For some types of X-ray tests, a contrast medium â such as iodine or barium â is introduced into your body to provide greater detail on the images.