And one more additional curiosity:
ContourPlot[x^2 == 1/10000, {x, -1, 1}, {y, -1, 1}, PlotRange -> {{.0022, .01}, {-.3, .3}}, PlotPoints -> 30]
ContourPlot[10000 x^2 == 1, {x, -1, 1}, {y, -1, 1}, PlotRange -> {{.0022, .01}, {-.3, .3}}, PlotPoints -> 30]
![enter image description here](http://community.wolfram.com//c/portal/getImageAttachment?filename=g3.jpg&userId=159033)
Why are not identical the results?