1. The Electromagnetic Spectrum Contents: The Spectrum Basic Concepts Whiteboards

2. The electromagnetic spectrum TOC

3. Radio Waves Microwaves Infra-red Light, Ultra-violet X-rays Fight fight fight! Gamma Rays ….? Yeah! Go Physics!!!!!!

4. Basic Concepts TOC v = f v = c = speed of light = 3.00 x 10 8 m/s f = frequency (Hz) = wavelength (m) 1 nm = 1 x 10 -9 m

5. Whiteboards: Electromagnetic Spectrum 11 | 2 | 323 TOC

6. 3.29 m W v = f 1 MHz = 1 x 10 6 Hz = v/f = (3.00 x 10 8 m/s)/(91.1 x 10 6 Hz) = 3.29 m What is the wavelength of a 91.1 MHz radio wave? (2)

7. 2.46 x 10 9 Hz W v = f f = v/ = (3.00 x 10 8 m/s)/(.122 m) = 2.46 x 10 9 Hz What is the frequency of a 12.2 cm microwave? (ovens use this)

8. 5.00 x 10 14 Hz W v = f 1 nm = 1 x 10 -9 m f = v/ = (3.00 x 10 8 m/s)/(600. x 10 -9 m) = 5.00 x 10 14 Hz What is the frequency of a 600. nm light wave?