1. Critical and Brewsters Angle
Magnitude and phase of the pressure reflection coefficient with c2/c1 = 0.9 and z2/z1 = 0.9.

2. Critical and Brewsters Angle
Magnitude and phase of the pressure reflection coefficient with c2/c1 = 0.9 and z2/z1 = Note the angle of intromission at 46.4˚.

3. Critical and Brewsters Angle
Magnitude and phase of the pressure reflection coefficient with c2/c1 = 1.1 and z2/z1 = Note the critical angle at 65.4˚.

4. Critical and Brewsters Angle
Magnitude and phase of the pressure reflection coefficient with c2/c1 = 1.1 and z2/z1 = Note the angle of intromission at 43.2˚ and critical angle at 65.4˚.

5. Critical and Brewsters Angle
Magnitude and phase of the pressure reflection coefficient with c2/c1 = 0.9 and z2/z1 = 0.9.