Answer:
Surface roughness is defined as the shorter frequency of real surfaces relative to the troughs. If you look at machined parts, you will notice that their surfaces embody a complex shape made of a series of peaks and troughs of varying heights, depths, and spacing.
example
;Cold-pressed watercolour paper has a rough surface, which gives paintings added texture and visual interest.
Salak: This is the fruit of certain types of palm trees. It’s round and pear-shaped, with a spiky, rough surface.
Explanation:
