Electromagnetic waves

• Electromagnetic waves

  Transverse waves that transfer energy from the source of the waves to an absorber
• Visible light

  • Part of the electromagnetic spectrum
  • Different wavelengths and frequencies
  • Longer wavelength and lower frequency at red end
  • Shorter wavelength and higher frequency at violet end
• Electromagnetic spectrum

  • Radio waves
  • Microwaves
  • Infrared
  • Visible light
  • Ultraviolet
  • X-rays
  • Gamma rays
• Electromagnetic spectrum is a continuous spectrum, cutoff points between waves are not always clear
• Electromagnetic waves do not need a medium to travel, they can travel through a vacuum