Primarygun Posted March 23, 2005 Share Posted March 23, 2005 What does coherent exactly mean? What does same phase difference refer to? Why these two factors must be present so as to create interference? Link to comment Share on other sites More sharing options...
swansont Posted March 23, 2005 Share Posted March 23, 2005 What does coherent exactly mean? What does same phase difference refer to?Why these two factors must be present so as to create interference? Coherent means that the phase doesn't change with time or position (you can have spatial and/or temporal coherence). You measure phase from a particular point in the wave (e.g. the peak) Why do you think a constant phase difference is important? Link to comment Share on other sites More sharing options...
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