What is an Oblique Incidence?
An incidence that occurs when the sound beam strikes the boundary between different media at an angle other than 90 degrees
AKA - Non-Perpendicular Incidence, Acute Incidence, Obtuse Incidence
*The incidence angle is greater than 0
*The reflected sound may not return back to the source
*The transmitted sound may travel in a direction different from the incident sound or it may travel in the same direction