young’s double slit experiment- models light as a wave

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 = λf c = λfENERGY

Example: A radio wave has a wavelength of 2.8653m. 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

Refraction

Reflection/Refraction

Dispersion

Total Internal Reflectionn1>n2

water to air

glass to air

glass to water

өc = critical angle

ө1 < өc Reflection and refraction

ө1 ≥ өc ONLY Reflection

nn

nc

1sin

1

2