Two Source Interference includes the following learning objectives:

  • Define and use the terms Phase Difference, Path Difference and Coherence;
  • Understand the principle of superposition using graphical methods;
  • Recognise constructive and destructive interference in terms of phase difference with two coherent sources;
  • Understand that maxima and minima are produced when the path difference is n??and (n+?)??respectively;
  • Describe Young?s Experiment in the determination of the wavelength of light and understand the historical importance of this experiment;
  • Recall and use?? = ax/D

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