1. The Electromagnetic Spectrum

2. Characteristics of EM Waves All travel at the speed of light, 300,000 km/s – This is possible because EM waves have different wavelengths and frequencies The entire range of EM waves are called the Electromagnetic Spectrum – Divided into regions according to length of wave

3. Visible Light Narrow range of the EM Spectrum that we can see Shorter wavelengths and higher frequencies then infrared waves We see different wavelengths as different colors Visible light from the sun is white light – White light is visible light of all color wavelengths combined

4. ROY G BIV All colors of the Visible Light Sprectrum Red, Orange, Yellow, Green, Blue, Indigio, Violet Red has longest wavelengths, Violet has the shortest