March 6, 2007 Interference and Diffraction Name _________________________

Visit these sites and rate them as to how well they presented each topic.

10 = best 1 = worst

____ http://vsg.quasihome.com/interfer.htm Double slit interference

Here you can change the wavelength, the distance between the two slits and the distance to the screen.

____ http://www.walter-fendt.de/ph14e/singleslit.htm Diffraction

You can change the wavelength and change the size of the opening.

Not required: You can change the angle. The Relative Intensity (brightness) on the screen at that angle is displayed below the Max and Min information boxes.

____ http://projects.cbe.ab.ca/sss/science/physics/map%5Fnorth/applets/grating/grating.html

Single, Double, and Multiple Slits

What happens to the width of the maxima as the number of slits increases?

You should vary the width of the slits and separation of the slits for a case of at least 3 slits.