electromagnetic spectrum
The electromagnetic spectrum consist of waves that is organised according to frequency and wave length but they all have one common factor, in a vacuum they all travel at the same speed the speed of light which is 3 x 108 m/s. the unit for measuring electromagnetic waves is called a micron The contents of the spectrum are radio waves, microwaves, infrared, visible, ultra violet, x-rays and gamma which all create energy. ... RADIO WAVES Radio waves are the longest in the electromagnetic spectrum. ... INFRARED These are the ones that are beyond the red end of the visible spectrum and lies somewhere in between the visible and microwave end of the spectrum. ... VISIBLE The visible spectrum is the only one we can see and we know these rays as the rainbow red, orange, yellow, green, blue, indigo and violet or remembered in the order of Richard of York gave battle in vain. ... GAMMA These are the most dangerous of the electromagnetic spectrum they have the shortest wavelength but the most energy.