tomc Posted February 7, 2009 Share Posted February 7, 2009 Hi, I have been viewing some physics lecture videos and have come across a notation that is not familiar. Any help will be appreciated. The following is part of an equation for wave motion: ε(epsilon) φ(phi -with 2 dots above it) = c^2÷ε [(φ sub i - φ sub i+1)+(φ sub i - φ sub i-1)] φ(phi with a dot above it) and φ(with 2 dots above it) What do the dots above φ indicate? Thanks, Tom Link to comment Share on other sites More sharing options...
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