The Electromagnetic Spectrum What is the electromagnetic spectrum? What is the speed of waves of the EMS in a vacuum (in vacuo)? Gamma rays X Rays Ultraviolet Visible Infrared Microwave Radio waves Frequency range Wavelength range Uses Dangers (if there are any) Image credit: NASA (2007) EM Spectrum properties edit.svg http://en.wikipedia.org/wiki/File:EM_Spectrum_Properties_edit.svg Accessed: 6th March 2014