An object (or section of an object) is prismatic if its cross-sectional dimensions are constant in a specified direction.
Resonator examples —
- A cylindrical resonator is prismatic if its diameter is constant in the direction of the stud axis.
- An unslotted bar horn is prismatic if its width and thickness are constant in the direction of the stud axis. (Slotted horns cannot be prismatic because of the slots.)
- A disk is prismatic if its thickness is constant along the radius.
Also see unshaped horn.