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Re: Waves revisited



The single slit pattern modulated the double slit pattern. An ideal
double slit pattern has all maximums at equal intensity. However the
actual double slit pattern either rolls off or has a couple of
"envelope" maximums due to the single slit interference intensity.

The relationship for the intensity of a double slit pattern and for a
single slit pattern can be found in Halliday and Resnick among others.
The relationship for the actual double slit pattern is simply the
product of the double slit intensity equation and the single slit
intensity equation.

I have had my students write programs ato simulate the patterns on the
computer with good results.

Ray Rogoway
Independence High School
San Jose, CA