Lesson 5 : Interference of light waves: Young’s
double slit experiment
Thomas Young performed series of experiments toward the end of the 1700 to determine what happens when light passes through two closely spaced slits. Young's basic set up is now called Young's double slit experiment and it conclusively proved that light behaves like a wave. The experiment also provided a method for measuring the wavelength.
Thomas Young (1773 – 1829)
Shows a demonstration of Young’s double slit experiment from You tube ( Link above).
Teacher iscusses the experiment with the class, highlighting new terms and deriving appropriate
Solve some problems on the topic in small groups and the results are written by each group on the white board for discussion and spooting of errors.
Students solve more problems on the topic in
Fig.8: Double-slit experiment (www.Google.ca)