DescriptionAiryAi Arg Surface.png	A surface plot of the argument of the Airy function: ${\displaystyle f(x)=\mathrm {arg} \left[\mathrm {Ai} (x+iy)\right]}$ x and y both run from -4 to 4.
Date	7 March 2008 (upload date)
Source	Own work,   This diagram was created with Mathematica.
Author	Inductiveload
Permission (Reusing this file)	Public domainPublic domainfalsefalse I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Mathematica Code

Plot3D[
 Arg[AiryAi[x + I y]],
 {x, -4, 4},
 {y, -4, 4},
 BoxStyle -> Directive[
   Thickness[0.002],
   Black],
 TicksStyle -> Directive[
   Bold,
   FontSize -> 32,
   FontFamily -> "DejaVu Mono",
   Thickness[0.0015]],
 LabelStyle -> Directive[
   Bold,
   Italic,
   FontSize -> 40,
   FontFamily -> "DejaVu Mono"],
 PlotStyle -> Directive[
   Red,
   Specularity[White, 5],
   Opacity[0.8]],
 PlotPoints -> 50,
 MaxRecursion -> 3,
 ImageSize -> 1600,
 AxesLabel -> {"x", "y", "z"},
 ExclusionsStyle -> {None, Red}
 ]