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,
Ultraviolet radiation, like infrared radiation, lies just outside the visible part of the spectrum, but with higher frequencies; some animals, such as bees, are capable of seeing such radiation. Both infrared and ultraviolet radiation are often referred to as forms of light, though they cannot be seen by human beings.