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

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Presentation transcript:

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

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

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

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

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?

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 __________________

color addition

color subtraction

Wave Fronts and Rays

Law of Reflection

Regular and Irregular Reflection

Refraction of Light Demonstration Applet

Refraction

Reflection/Refraction

Dispersion

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

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