differentiate between crest and trough with more than 3 points (
1) A crest is the point on a wave with the maximum value or upward displacement within a cycle. A trough is the opposite of a crest, so the minimum or lowest point in a cycle
2) Crest is a form of positive displacement from the rest position whereas trough is the negative displacement .
2) Crest is a form of positive displacement from the rest position whereas trough is the negative displacement .