Compare blue and orange light from the visible spectrum. Between the two lights: 1) Which has the longer wavelength? 2) Which has a greater frequency? 3) Which has greater energy? Electromagnetic radiation with a wavelength of 589 nm appears as yellow light...
At one end of the spectrum, we have Gamma Rays, X-rays and ultraviolet (UV) Light. These have a very small wavelength. At the other end of the spectrum are radio waves, which have a longer wavelength. In between is a very small section known as infra-red light, plus microwaves....