1. Young’s Double Slit Experiment- models light as a wave.

2. An electromagnetic wave is a transverse wave. The speed of light in a vacuum: c = 3.0E8m/s radio waves

3. Electromagnetic Spectrum – continuous spectrum of all electromagnetic waves. All EM waves travel at the speed of light. (c) c = λ f ENERGYENERGY

4. Example: A radio wave has a wavelength of 2.8653m. What is the frequency? In MHz?

5. The frequency of infrared waves is 3.0E14Hz and the frequency of X-rays is 6.0E17Hz. Calculate the wavelength of both of these types of electromagnetic waves. How does the energy of X-rays compare to infrared waves?

6. Complete the following statements: As the frequency of an EM increases the wavelength _____________ As the frequency of an EM wave increases its energy _____________ As the wavelength of an EM wave increases its energy _____________ As the frequency of an EM wave increases its wavelength ____________ and its speed __________________

7. color addition

8. color subtraction

9. Wave Fronts and Rays

10. Law of Reflection

11. Regular and Irregular Reflection

12. Refraction of Light Demonstration Applet

13. Refraction

15. Reflection/Refraction

20. Dispersion

24. Total Internal Reflection n 1 >n 2 water to air glass to air glass to water ө c = critical angle ө 1 < ө c Reflection and refraction ө 1 ≥ ө c ONLY Reflection