12.1 electromagnetic spectrum

12.1 electromagnetic spectrum

1. the electromagnetic spectrum (in order of decreasing wavelength and increasing frequency and energy)is made up of

   • radio waves
     • microwaves
       • infrared radiation
         • visible light (red to violet)
           • ultraviolet waves
             • x-ray and gamma rays

2. the human eye can only detect visible light.the wavelength of the visible light from 400 n to 700 nm

3. The electromagnetic waves transfer energy from a source to an absorber