Update Cardiac.md

day-02/Cardiac.md

@@ -61,8 +61,6 @@ We'll use [Paraview](https://www.paraview.org/) for visualization (there is also
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 * Make a second test method within the tutorial .hpp file and convert it to the analogous monodomain problem - you only need to change 'Bi/bi' to 'Mono/mono'. Note, you'll need to `#include MonodomainProblem.hpp` at the top of the file.
 
 (If you were using the results vector within C++, be aware that indexing will be different for voltage as it now has the form `V_0 ... V_n`, not `V_0 phi_0_ ... V_n phi_n`).
@@ -82,4 +80,6 @@ monodomain_problem.Solve();
 makes the program print out `[min(V), max(V)]` at each output time. It can be a simple way to see whether waves are propagating without even having to visualise the output. 
 * Using `SetWriteInfo()` Determine, approximately, by trial and error, the threshold below which the stimulus magnitude is too small to create a propagating action potential. 
 
+The default end time is only 5ms here, so we just see the activation wave. If you want to see the repolarisation wave you need to run until time 350ms.
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