1. belly wave with wave (trough) where there is a displacement that the most negative 2 wave to wave Ridge. (crest) the displacement is constant at most plus .
The interference each divided into two forms. 1 trough to trough (trough). 's position is the displacement of a negative point. 2 crests the ridge wave (crest). 's position is the displacement plus. most
Interference complementary model is divided into 2
1. Pregnant stomach wave wave (trough) is a position displacement minus most 2. Crest to crest. (CREST) is that position is the most positive displacement .