A convoluted way to say “Hi”

The Walking Randomly blog tells this tale:

One website I came across (I have lost the link unfortunately) suggested that you get something interesting looking if you plot the following equation over the region -3<x<3, -5<y<5. It also suggested that you should only plot the z values in the range 0<z<0.001.

$\light f(x,y)=e^{-x^2-\frac{y^2}{2}} \cos (4 x)+e^{-3<br /> \left((x+0.5)^2+\frac{y^2}{2}\right)}$

Suitably intrigued, I issued the required Mathematica commands and got the plot below which spoke to me in a way that no equation ever has before.

(Thanks to investigator Phoebe Shitaka for bringing this to our attention.)

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