Driving a commercial motor vehicle is a big responsibility. It requires special skills and knowledge. Most drivers must obtain a commercial driver's license (CDL) through their home State (it is illegal to have a license from more than one State). Contact your State licensing bureau (e.g., Department of Motor Vehicles) for details.
Parts of our body (eyes) function as pretty good detectors for. electromagnetic radiation in the visible-light band. Nerve endings in our skin operate as detectors for radiation in. the heat band, and our bodies as a whole transmit radiation in. the heat band. Skin pigment also responds to stimulation by ultraviolet radiation,
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. 2  Difference Between X-Rays and Gamma Rays.